Question: Who first discovered electromagnetic radiation?

Magnetism

It follows from phenomena such as length contraction, time dilation and the fact that magnetic force depends on velocity, it follows that according to relativity there could be magnetism without electricity or electricity without magnetism.


Question: Who first discovered electromagnetic radiation?

Magnetism

In contrast, the theory of electromagnetism, to which both essentially belong, is fully compatible with special relativity.


Question: Who first discovered electromagnetic radiation?

Magnetism

[10] [20] In particular, the same phenomenon, which from the point of view of one observer appears purely electrical or purely magnetic, can, from the point of view of another observer, be a combination of both.


Question: Who first discovered electromagnetic radiation?

Magnetism

The electric and magnetic fields are not independent of each other, but together form an electromagnetic field.


Question: Who first discovered electromagnetic radiation?

Magnetism

How it splits into an electric and magnetic field depends on the motion state of the observer and the coordinate system used in a manner demonstrated by the Lorentz transform of the electromagnetic field.


Question: Who first discovered electromagnetic radiation?

Magnetism

[21] Even before the theory of relativity, magnetism could be attributed to Maxwell's theory as being caused by the fact that, as an electric charge moves, it takes time for an electric field to deform into the shape required by its new position.


Question: Who first discovered electromagnetic radiation?

Magnetism

Admittedly, the change proceeds very quickly, at the speed of light, but there is always a slight delay in the field, accompanied by fluctuations in the field as magnetic forces between moving electric charges.


Question: Who first discovered electromagnetic radiation?

Magnetism

[22] All observations of electromagnetism suggest that phenomena that appear primarily magnetic, for example perturbations in a magnetic field, are always accompanied by an electric field, and changes in fields propagate at the speed of light.


Question: Who first discovered electromagnetic radiation?

Magnetism

Sources on the topic elsewhere (pdf) (pdf) Category:Key articles in screening


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The North Arctic Circle is the Earth's Arctic Circle whose angular distance from the Earth's North Pole coincides with the slope of the Earth's axis.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

It is the furthest latitude from the North Pole, from which the centre of the sun is seen once a year, on the summer solstice, above the horizon around the clock, but not at all on the winter solstice.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The position of the North Arctic Circle in 2000 was 66°33′39″ (or 66.56083° as a decimal number) north latitude.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The position of the Arctic Circle is slowly


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

Lighting zones The northern Arctic Circle determines the southern boundary of the occurrence of the nighttime night or midnight sun and, accordingly, the southern boundary of the sunless zone of the heartland winter.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

North of the Arctic Circle, the center of the sun is above the horizon for at least one full day per year and correspondingly at least one whole day below it.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

In the Arctic Circle, these happen exactly once a year, during the summer and winter solstice.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

Observations of the view of the sun according to the theory do not accurately materialize on Earth, since the ground surface is not a perfect sphere and in the Earth's atmosphere the light bends.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

Significant influence of the atmosphere The atmosphere strongly refracts the light of the sun shining from the horizon and therefore the sun appears in the Arctic Circle even during the winter solstice as a whole above the horizon.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

In addition, in the winter of the heart, the sun can be observed on fells and hazards significantly north of the Arctic Circle, including Luosto and Pyhätunturi, which are about 60 km (equivalent to about 0.5° latitude) further north.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

Similarly, the summer night sun is seen in the Arctic Circle above the horizon and, for example, in Rovaniemi in the immediate vicinity of the Arctic Circle, the sun did not set between 6 June and 6 July in 2008.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

[1] In midsummer, the midnight sun can be observed in several high places south of the Arctic Circle, including Avasaksa and Rukatunturi.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The Arctic Circle as a climatic and vegetation boundary The Northern Arctic Circle is also often considered the boundary between the Arctic, or the Arctic, and the Northern Temperate Zone.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

However, it does not form a clear climatic boundary, as ocean currents in particular affect the climate of the northern regions quite a lot; so, for example, Lapland north of the Arctic Circle is warmer on average than in many places in Greenland or Siberia south of it.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

Also, in the plant kingdom, the Arctic Circle does not determine any sudden changes.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

[2] One could try to consider the Arctic Circle as an attribute of a forest boundary, but in practice the forest border is difficult to figure in many places.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

For example, in northern Russia, the transformation from coniferous forest to treeless tundra occurs gradually over an area 300 kilometers wide.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

On the other hand, in mountainous areas and fells, elevation determines the conditions for growing trees.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The tree line lies approximately where the +10°C isotherm, the warmest month of summer, is located.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

Both the tree line and this 10°C isotherm differ from the Arctic Circle.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

In its plant and animal studies, the Arctic Council decided to use the CAFF boundary (Conservation of Arctic Flora and Fauna) for its polar regions in both directions.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

Complex motion of the Arctic Circle Axis inclination variation and nutation In the short term, the position of the Arctic Circle can be considered approximately constant, although the annual motion averages 14 meters.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

This motion, which means a change in the slope of the Earth's axis, is the combined effect of complex, both short- and long-term attractions related to astronomy and the structure of the earth.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

As the axis tilt of the Earth varies, the arctic circles and pivot circuits are also shifted accordingly.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The long-term master cli of variation causes the Arctic Circle to fluctuate between latitudes 65.5° and 67.9° over a period of 41000 years.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

Under the influence of this cycle, the Arctic Circle is currently moving towards the north.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The Earth's axis of rotation is also affected by more short-term variations, such as nutation due to solar and lunar attractions, with an access cli of 18.7 years long and an amplitude of 9 arcseconds equivalent to just under 300 metres in a south-north direction.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

In addition, there are other disturbances caused by planetary precession movements, which vary in time scales and day shifts the effect is on the order of one metre in one direction or another.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The Earth's own precession, the wobble in the 25725-year cycle of the axis of rotation does not affect the position of the Arctic Circle.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

Polar variation Even the axis of the earth is not a fixed concept.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The location of the poles is wandering a circle-like track.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The reason for the circulation is the movements of molten matter within the earth and mass transfers occurring on the surface of the earth, such as ocean currents and air currents.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The Earth orientation center [3] registers, among other things, movements at the North Pole.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The pole is drawing a circle with a diameter of the order of 10—15 meters.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

Unit mas (milliarc-second), a millarcsecond equals about 3.1 centimeters on the surface of the earth.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

States and seas in the Arctic Circle, the narrowest point of the Bering Strait is quite closely located in the northern Arctic Circle.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

In Finland, the Arctic Circle passes through Lapland, through the municipalities of Pello, Ylitornio, Rovaniemi, Kemijärvi and Salla, across the airport runway in Rovaniemi.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

The Northern Arctic Circle runs through the territory of eight states.


Question: Where does the Northern Arctic Circle begin?

Northern Arctic Circle

Those, as well as the seas through which it passes, are as follows, listed east from the Bering Strait: See also Kravu Turning Circle to Caprici Equator Sources on the topic elsewhere Category:Natural geography Category:Astronomy Category:Latitude Category:Key Articles of Screening


Question: What desert is located in Namibia?

Namib

Namib is a desert on the southwestern coast of Africa.


Question: What desert is located in Namibia?

Namib

It lies for the most part in the Namibian region and comprises the Atlantic coast between 50 and 160 km wide and 1,600 km long.


Question: What desert is located in Namibia?

Namib

In terms of area, the desert is about 50,000 square kilometers.


Question: What desert is located in Namibia?

Namib

The word namib means' huge 'in the Nama language.


Question: What desert is located in Namibia?

Namib

Namib is thought to be the oldest of the present-day deserts; it originated about 80 million years ago when the cold Benguelan Current began to cause cool, dry air to settle in the area.


Question: What desert is located in Namibia?

Namib

It rains less than 10 millimetres per year in the Namib region and it is for the most part deserted.


Question: What desert is located in Namibia?

Namib

In Namib lies a group of the highest sand dunes in the world.


Question: What desert is located in Namibia?

Namib

Dune number 7 is about 340 metres high.


Question: What desert is located in Namibia?

Namib

One of the only permanent settlement areas is Sossusvlei near the dune group.


Question: What desert is located in Namibia?

Namib

The northern edge of the desert additionally lie the towns of Walvis Bay and Swakopmund.


Question: What desert is located in Namibia?

Namib

When the moist air arrives from the sea encounters the dry air of the desert, plenty of fog is created on the coast, condensing into morning dew to the use of sparse vegetation.


Question: What desert is located in Namibia?

Namib

The fog has also caused strays and shipwrecks of several ships in the vicinity of the coast; some of the wrecks are now located on land up to 50 metres from shore due to the gradual spread of the desert towards the sea.


Question: What desert is located in Namibia?

Namib

The most famous animal of the Namib Desert is probably the “desert elephant” living in Damaramaa, a form adapted to the desert of the savannah elephant.


Question: What desert is located in Namibia?

Namib

Desert elephants roam from one oasis to another in the desert like tapered rhinos called “desert rhinos” [1].


Question: What desert is located in Namibia?

Namib

Over the long history of Namib, several endemic plants have had time to develop in the desert, accustomed to extreme drought and able to satisfy their water needs from the sheer moisture of the fog.


Question: What desert is located in Namibia?

Namib

The most famous example is a peculiar perpetual leaf.


Question: What desert is located in Namibia?

Namib

Among the natural resources significant are tungsten, salt and diamonds.


Question: What desert is located in Namibia?

Namib

Sossusvlei Sources Coordinates: Category:African deserts Category:Geography of Namibia


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

A spelling bee ('spell gathering' [1] [2]) is an event in which contestants, usually children, take turns to spell individual words uttered to them letter by letter.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

Contestants are allowed to ask the pronouncer specific questions, for example, about the meaning and origin of the word.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

At the most demanding levels, a misspelled word results in elimination immediately from the competition, unless all remaining contestants fail during the same round.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

If only one of the remaining contestants succeeds, he or she needs to meet one more additional word, that is, a possible winning word.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

If he fails at this, no one will be pruned; the race will continue until someone knows how to spell their winning word flawlessly.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

[3] Contrary to what one might think from the Finnish denomination, the spelling bee does not pay attention to the syllable structure of words, but merely to the spelling.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

Such contests can be considered meaningful mainly when the spelling does not directly correspond to the pronunciation.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

Spelling contests are a nationally respected tradition, particularly in the United States, from where they have spread to some extent to other English-speaking countries and communities.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

History The roots of English spelling races date back to the 16th century.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

At that time in English, meeting, spelling, was still understood primarily as structuring the syllable structure of words, which promoted learning to read (in the same way as, among other things, in Finnish today).


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

In 1596, Edmund Coote put forward a pedagogical model in which a pupil was led to consider the relationship between English pronunciation, syllable structure and spelling by asking the latter to list the letters appearing in the spelling of the word.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

[4] Coote's method of teaching was modified in 1751 by Benjamin Franklin with an emphasis on spelling to read instead of learning.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

Franklin also added a competitive dimension to the methodology, with which prizes began to be handed out to the best pupils.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

During the latter half of the 18th century, spelling competitions became established as a key part of the teaching of reading and spelling in American and especially US schools.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

At the same time, English spelling gradually began to mean specifically spelling or listing the letters included in a word, which practically ignores the syllable structure and may therefore appear self-intentional.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

[4] Spelling races were a popular pastime outside schools in the 19th century.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

They required no major preparation, as the rules were simple and the contestants could, leaning on a suitable source piece, judge each other.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

The basis was a spelling textbook published by Noah Webster in 1783, which still emphasised the syllable structure of words as the basis for reading and writing.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

The book, which came out a few years after US independence, on the other hand, also had a nationalistic purpose: American children needed to be provided with an American textbook and to develop a uniform American English spelling code and pronunciation model.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

[4] Enthusiasm for spelling contests as a free-form pastime subsided in the late 19th century, and in the 20th century the formal structure of competitions became established.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

In addition to schools, spelling competitions were organized especially by local newspapers.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

National-level spelling contests are calculated to have begun in 1925, when a Kentucky newspaper first held a statewide contest and then invited newspapers in other states to send their delegates to compete against Kentucky's delegates.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

Representation wasn't necessarily country-wide, but at least the final contest took place in the capital, Washington.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

[4] A total of two million competitors participated in the qualifiers, and in the end the victory was taken by 11-year-old Kentucky Frank Neuhauser by flawlessly spelling the winning word gladiolus 'sword lily'.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

[5] Qualifying competitions are still largely organised by local players, but on a national level the competition has been supported since 1941 by the media company Scripps.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

Nowadays, the national competition held under the name Scripps National Spelling Bee has gained official status and has significantly increased in popularity, especially as the final competition has been launched on national television channels since the 21st century.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

In addition to the United States, the competition can be entered through qualifiers held in other English-speaking countries, but all contestants must conform to the spelling rules in American English.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

[4] Eleven million schoolchildren participated in the 2012 spelling bee pre-qualifiers, most of whom were aged 13 to 14.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

The final stage of the final competition involved nine contestants.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

[6] Pedagogical significance Spelling contests have been criticized as pedagogically inappropriate.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

While the organizers of the Scripps contest offer tips on how to prepare for the competition, the race itself is not committed to any specific educational methods or goals.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

The goal is not to learn to read, as in Coote's teaching model, and really no longer spelling, but the ultimate goal has been the triumph of competition and television publicity.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

As contestants' competence levels rose, questions have also been made difficult, and the final contestants in particular today are required to cope with very special quotes, whose position in the convoluted English spelling itself is difficult to perceive.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

[4] On the other hand, the Scripps competition has been praised for the fact that ultimately it is not enough to be successful by mechanical imputation of words.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

Instead, contestants are forced to consider and itemize the structure and origin of words, as they should be able to understand why words borrowed from other languages are written the way they are written.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

[7] Variations Variations of spelling competitions can be considered, for example, dictation competitions in French-speaking countries, where contestants must write an entire snippet of text according to their dictation, and the grading pays attention to grammar in addition to spelling more broadly.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

In Chinese, meanwhile, there is competition to see who can find the spelling mark corresponding to a pronounced word fastest in the dictionary.


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

[8] Spelling Bests in popular culture Long live, Jaska Jokunen!


Question: Where are spelling contests a nationally respected tradition?

The spelling bee

(A Boy Named Charlie Brown), an animated film based on the Peanvat cartoon (1969) Spellbound (2002 documentary) The Spelling Master (I'm Spelling as Fast as I Can), episode of the Simpsons television series from 2003 [9] Bee Season (2002 novel and 2005 film) Sources On topic elsewhere Check date values in: |accessdate= (help) Check date values in: |accessdate=, |date= (help) Category:American culture Category:Contests


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Medical radiography (in scientific contexts, radiography, X-ray [1]) refers to the use of X-ray radiation to imaging living organisms.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The method is based on X-ray absorption and image formation.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Only a portion of the radiation gets through the object being photographed, which then forms a tangible image digitally or analogously on X-ray film.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

A medical X-ray is therefore a two-dimensional shadow image formed by radiation absorbed by a human or animal.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

X-ray radiation is high-energy electromagnetic radiation with a wavelength much shorter than that of visible light.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Sometimes radiographic examinations described with gamma radiation are also referred to as X-rays, although physically it is not the same thing but gamma imaging utilizing more frequent electromagnetic radiation.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

X-ray radiation is harmful to living objects, which is manifested by an increase in the risk of cancer.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[2] [3] [4] Radiation protection is an important part of medical radiography.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The principle of X-ray imaging was invented by the German Wilhelm Röntgen.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

X-rays received an exceptionally enthusiastic reception among scientists and laymen alike.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Medical applications were rapidly developed from the new radiation, for example X-ray imaging for film and through-light.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[5] Today X-rays can be done completely digitally and do not need to use paper transmissions or film; the entire technical part of the imaging process to archiving images takes place on a computer.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Medical X-rays are estimated to be tasked in the world at about 5 billion per year, [6] most of which are traditional X-rays performed without contrast agent.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Dental X-rays also cover a big chunk of all X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The number of throughput studies has dropped considerably, less than 2% of all studies as newer imaging methods have been generalised.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The branch of medicine in which the diagnosis is based on X-ray examinations, for example X-rays, is called radiology [7].


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Radiography requires the patient's cooperation, because during the scan, among other things, you must not move.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[8] History of X-ray imaging Rapid generalization of X-ray The principle of X-ray imaging was invented by the German Wilhelm Röntgen in 1895.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

He realized that with the rays he found, he could shed light on the film.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

He received the first Nobel Prize in Physics handed out for his discovery in 1901, but took a modest approach to the radiation he discovered.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The discovery of Röntgen caused a small revolution in the field of physics, and several scientists began studying it.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The discovery received an exceptionally enthusiastic reception among scientists and laymen alike.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[5] The invention of Röntgen was astonishingly quickly adopted into medicine.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The method was first used in the United States just less than a month after Röntgen had published an article on radiation.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Eddie McCarthy, who broke his wrist in a skating accident on the ice of the lake, was the first patient to have X-rays used for diagnostic purposes.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[9] Frank Harrison published the first scientific article on dental imaging in 1896, which also featured X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The first dental images reportedly were taken in Germany two weeks after X-rays were made public.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[10] The harms of radiation were first reported as early as March 10, 1896, in a case in which John Daniels had beamed the head of his colleague William Dunley for an hour for a skull image.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

As a result of the shoot, Dunley's hair had fallen out.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In the same year, an incident in Berlin was reported in which a 17-year-old youngster had received burns from an X-ray.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

However, there was ambivalence about radiation right up until the middle of the 20th century.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The departure of the hair might even be thought to prove that X-rays could be used to remove uncomfortable hair.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Radiation allowed young women to thin their hair and in shops sold substances containing radioactive isotopes as health preparations.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Licensed radiation use originated in 1899 in Austria.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In Finland, the first safety regulations related to X-ray radiation were issued in 1932.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[11] Inventor Thomas Edison became interested in X-ray radiation after reading an article in the United States by Wilhelm Röntgen.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Edison elaborated that scheelite fluoresces X-rays much brighter than the platinum cyanide Pt (CN) 42- used by Röntgen.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Building on his observations, Edison built the world's first commercial through-lighting device, which nonetheless exposed the viewer's eyes to direct radiation.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Edison himself almost lost his sight while working diligently with the throughput, and Clarence Dally, who was a test person in his experiments, contracted radiation sickness and later cancer.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

A horrified Edison quit his job with X-ray due to these personal losses.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[12] The first X-ray assisted surgery was performed by John Hall-Edwards in Britain in 1896.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Hall-Edwards was one of the early X-ray scientists, and had to have his left arm amputated due to inflammation from excessive X-ray radiation.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Hall-Edwards still served in Britain for another 20 years as head of the X-ray department.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[13] Medical radiography also developed in France, following immunologist Antoine Béclère's interest in X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

For lung imaging, he developed an X-ray imaging machine to which the patient was strapped and in which this was moved to different positions to allow the lungs to be fully imaged.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

For filming, he developed lead fairs and leaded rubber gloves as ray guards.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In 1906, Béclère performed the first contrast imaging of the abdominal area.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

He fed the patient bismuth and managed to photograph the patient's appendectomy.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[14] History of X-ray imaging in the military forces of several different countries became interested in X-rays shortly after their invention.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

X-ray imaging was used in the war forces for the first time for real war injuries in Naples in 1896.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The X-ray was then used as an auxiliary tool to locate bullets from two soldiers who had been wounded during the Italian Ethiopian war expedition.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[14] [15] The development of the X-ray apparatus for medical imaging accelerated when World War I broke out in Europe in 1914.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The development was driven in particular by the need to develop X-ray machines that would be easy to move around fronts and hospitals.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Efforts were also made to reduce the number of moving parts to make the equipment more durable and easier to repair.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The war also increased the quantitative need for X-ray machines in addition to the qualitative need, whereby X-ray installations began to be mass-produced for the first time.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Typically, X-ray imaging installations during the war were installed in a car, with the dynamo generating electricity from fuel for the X-ray machine.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Wounded soldiers were better treated and were more likely to survive their injuries when mobile X-ray units provided rapid diagnosis of foreign objects such as bullets and shrapnel, as well as broken bones and dislocations.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[14] [15] [16] [17] Between the World Wars, X-ray imaging equipment developed in the War Forces to become even smaller and more easily mobile.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In addition, beam shields came into use in X-rays of the armed forces and the safety culture improved anyway.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

By the start of World War II, X-ray imaging equipment was already very common and no significant development occurred during the war.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Around the time of the Vietnam War in the 60s and 70s, mobile X-ray units had become more efficient and imaging could be performed even at high voltages.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[15] Modern X-ray imaging With the development of X-ray imaging after World War I, other modalities such as contrast imaging with barium or iodine material began to develop in the field.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

First clip shoots and later three-dimensional imaging were provided by tomography techniques.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The first tomography scans developed by radiologist Alessandro Vallebona were performed in the 30s in Italy [18].


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The catheter radiograph, described by Swedish radiologist, Sven Ivar Seldinger in 1953, specialised as current angiography.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[19] Tomography scans of the dentition have been developed in Finland.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Professor Yrjö Paatero built the first prototype of a dental pantomograph device, where, however, strong shadows from the base of the skull were the problem.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The breakthrough was the three-wheel axis device developed by Paatero with Master of Science Timo Nieminen.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Its commercial production began in 1961 and it has become nationally important as a product.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[20] In 1972, British Godfrey Hounsfield and South African Allan Cormack developed, without each other's knowledge, the first computed tomography imaging methods.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

They won a later shared Nobel Prize for their work.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Computed tomography has evolved into its own imaging modality separate from traditional X-ray imaging and is today a very important part of radiological diagnostics.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Computed tomography scans today even reach the accuracy of a near-pathological sample in some diseases of the lungs.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[19] [21] The major changes in traditional X-ray imaging in the late 20th and early 21st centuries have occurred in detector technology and computer software for digital radiography.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Improvements have allowed for faster scans, lower patient doses and better image quality.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Today, for the most part, there has been a shift from using X-ray films to digital imaging.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The first film-free system was a picture disc system for CR (Computed Radiography) cassettes.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In the system, instead of film, an image is formed on a reusable shooting disk that is read optically by a CR reading machine.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The most recent method of X-ray imaging is directdigital system (Direct radiography, DR).


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In DR systems, an image disk detector transfers the image directly to a computer for the human eye to view.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[22] [23] The Mechanism of Medical X-ray Imaging Radiography relies on the ability of electromagnetic radiation to differently permeate heavy and light atoms.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In medical imaging, adipose tissue and airy lung tissue penetrate rays well and appear dark on X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Bone tissue, on the other hand, absorbs (absorbs) a lot of electromagnetic radiation and does not lower them through, making the bones look pale on X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[2] [24] It is also possible to use contrast agents that absorb X-rays well and thus improve, for example, soft contrast.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[25] Traditional X-rays are two-dimensional, and therefore, for example, in medical scans, at least two images from different directions should be taken of the object being photographed, if possible.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

For example, bones might look completely unscathed in one direction, but a fracture or defect position is revealed from the other direction.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Most often, one image is depicted from the front or back, and the other from the side.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[26] [27] Due to the two-dimensionality of X-ray imaging, superposition projection is a problem when making a diagnosis.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Computed tomography scans, on the other hand, give 3D clipart images of the subject, thereby eliminating the problem.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Computed tomography is a common follow-up examination for ordinary X-ray imaging.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[28] X-ray imaging apparatus The equipment of ordinary projection X-ray imaging consists of a radiation source hardware and an X-ray film or detector.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In addition, a darkroom is needed for X-ray film development and digital imaging equipment for digital imaging.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The source of radiation in X-ray studies is usually an X-ray tube.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[3] [29] Producing radiation Side-window X-ray tubes () are the most common X-ray tubes in medicine today.


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Medical X-ray

The structure of the side-window X-ray tube consists of a filament from which electrons are ejected in the vacuum prevailing in the X-ray tube onto the anode plate.


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Medical X-ray

X-ray radiation generated in the tube is formed for the most part as electron braking radiation and as characteristic X-ray radiation of anode plate material ().


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The anode plate is in the side-windowed X-ray tube oblique.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Thanks to the angle of the anode plate, the X-ray is removed, for the most part, from the window just on the side of the tube.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[30] [31] The X-ray tube needs an efficient cooling system to remain intact, as only one percent of the kinetic energy of the electrons is converted to X-ray radiation and the remaining 99% is mainly heat.


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Medical X-ray

In addition to the cooling system, durability in existing X-ray tubes is increased by a rotating anode plate.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Thanks to the rotating anode dish, electrons do not continuously bomb the same point of the dish, but rather a circle-shaped bowl over the entire area of the anode plate.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[32] Isotope imaging does not produce radiation from outside the patient, unlike standard X-ray imaging, but instead radioactive isotopes are introduced into the patient, which are imaged by a gamma camera.


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Medical X-ray

Radioactive tracer, or radio medicine, is administered either intravenously, inhalation or oral ingestion based on the method of imaging.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The radiation measured in isotope imaging is also not X-ray radiation in terms of energy.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[33] The operation of the X-ray tube is controlled by an X-ray generator whose function is to develop the necessary current to disconnect the electrons and generate a high DC voltage to accelerate the electrons.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The generator is able to do this by converting the voltage from the mains in a high-voltage transformer into the high voltage controlling the X-ray tube.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The DC voltage generator further converts the alternating current into high-quality DC voltage for the X-ray tube.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

From the control table of the X-ray generator, the radiographer sets the appropriate current, voltage and shooting time for the imaging subject.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The radiographer can also choose the use of exposure automatics from the control table.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In this case, the radiation coming to the detector is measured, for example, by an ionization chamber or a semiconductor detector, which cuts off irradiation from the control table according to selected pre-settings.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[34] In order to obtain a suitable contrast, it is important that the voltage used in the description is appropriate for that study.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

With too high or low voltage, darkening differences are reduced.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[35] The detection technique X-ray imaging requires a device in addition to the source of radiation on which the image is formed to be viewed by the human eye.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

X-rays have been described very soon after the invention of X-ray radiation for films, and the method is still in use.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The method involves putting the X-ray film on a film cassette that protects against light.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The film cassette has amplification plates that convert radiation into light.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In an imaging situation, the radiation is partially absorbed by the patient and only the penetrated radiation reaches the amplification plates that shed light on the film.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

After that, the radiographer or other radiation worker chemically develops the film and the image formed by the radiation appears on film.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[29] [36] Today, X-ray imaging is most often done digitally.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The X-ray emitted by the object is measured by various detectors and turned into electrical information.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Today, digital X-rays are described on CR cassettes and DR discs.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In CR cassettes, an image formed by radiation is read by an optical reading device that turns the image into a digital one for a computer.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

DRs immediately form an X-ray image and transmit the images to the computer wirelessly or wired.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

These digital images can be processed and modified by computers and read from the screen and, if necessary, printed on film.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Soon the whole X-ray film is about to disappear, as in many places we move to viewing images from a computer monitor.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[22] [23] [37] X-ray imaging room The X-ray imaging room shall, for the purposes of radiation protection of the staff, be constructed of lead or any other material which, in its thickness, corresponds to a certain statutory amount of X-ray absorption capacity.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

X-ray imaging facilities are divided into a surveillance and observation area.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Surveillance area means the actual shooting area where specific safety precautions must be observed to protect against radiation and where access is restricted.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Observation area refers to the area where working conditions are monitored to protect against radiation, that is, for example, the adjustment mode of X-ray rooms.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The entire range shall be such that the use of radiation does not cause radiation to workers or other persons.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Employees and family must leave the surveillance room, i.e. the shooting room itself, for the duration of the shoot whenever possible.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[38] [39] In the imaging room, the medical X-ray apparatus includes scaffolding, in addition to the X-ray generator and tube, to keep the X-ray tube and the image receptor in place and provide the patient in position for examination.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The racks may be separate from the equipment or they can form a solid whole.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[2] Mammography examinations are flattened between two plates for the purpose of imaging.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Image resolution and contrast improve as the rack flattens the chest thin, smoother and closer to the detector technique or film.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[40] Digital image viewing and archiving in X-ray studies Digital image viewing and archiving () has become widespread around the world, and in many places films have already been abandoned.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The advantage of being digital is that image viewing is not tied physically to any location.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Instead of X-ray films, digital information quickly moves from place to place even over long distances.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In England and Finland, among others, a nationwide PACS archive is being envisaged.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

It is possible to interpret digital images in the private sector even in a different country than the description has been completed.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The PACS system has been estimated to bring savings compared to film radiology, although start-up costs are high.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In addition, remote reading can reduce hospital congestion.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[41] X-rays stored in the PACS archive currently follow the DICOM standard ().


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Thanks to the standard, studies filmed elsewhere, even abroad, can also be easily transferred and viewed in PACS archives of other hospitals, for example via the internet network.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In addition to standard X-rays, the DICOM standard allows computed tomography, magnetic resonance imaging and ultrasound scans, as well as medical photographs to be archived in the same virtual archive as standard X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[42] [43] The problem with PACS is data protection.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

An inappropriate person can get to view pictures because it is effortless to move them from one place to another.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Digital image viewing also requires good image viewing conditions, as computer monitors have a small luminous intensity relative to the light boards used to view films.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Research suggests that medical center doctors' screens and image-viewing conditions are often inadequate for viewing X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Improvement in doctors' workstation work would be available if health centres invested in the purchase of sufficient quality displays and the lighting design of workstations and regular quality control of screens.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[41] [44] Projection X-ray scans are carried out in health care in Finland about 3.9 million X-ray examinations each year, plus about 1.3 million conventional dental scans and nearly 200000 panoramic tooth scans.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In total, at least 5 billion X-ray examinations a year are conducted worldwide.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Both chapters have taken into account all radiation studies, not just traditional X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Most often, X-ray examinations of the lungs and skeletal system are performed.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Dental pictures are also taken a lot, but the dose per patient is small.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

More radiation is obtained from studies other than traditional X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Angiography studies and various therapeutic measures, such as opening a blocked blood vessel, may result in a high dose to the patient.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The resulting dose can be as high as hundreds of millisieverts per study.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Also, in computed tomography studies, the dosage may be high.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[6] [45] The radiographer may reduce the radiation dose received by the patient during X-ray scans by placing a beam guard on the patient, preferably immediately at the boundary of the beam field, i.e. the delineation area of the image field.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[46] The use of X-ray radiation in medical diagnostics is based on the ability of X-rays to penetrate body tissues, but also on the fact that radiation attenuates in tissues according to their elemental composition and density.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Due to the two-dimensionality of the X-ray imaging, at least two images should be taken from different directions, if this is possible depending on the description.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

For example, bones may appear completely undamaged in one direction and when shooting in the other direction, a fracture or defect position is revealed.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Usually a front or back image is depicted, and then a side view.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[2] [26] Sometimes sloping or special projections are also described.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[47] For projection X-ray, it is possible to use an oral or rectal barium contrast agent which greatly improves the contrast of the gastrointestinal tract in images.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Barium is used to undergo colongraphy, ventricle and passager X-ray examinations, some of which are photographed using a throughput device instead of a standard X-ray.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Arterographic contrast agent studies are also performed on the shoulder.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Sometimes a further carbon dioxide is pumped into the intestine to achieve double contrast.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Nowadays, projection X-ray scans are usually not carried out with iodine scans used for intravenous iodine scans; iodine scans are usually carried out in computed tomography.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In Finland, only about 1.5 per cent of all projection X-ray scans are found.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The figure is broadly the same in Britain, for example.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[25] [48] The most common X-ray examination in healthcare As a rough overview, it can be said that in an imaging situation, the patient must be firmly attached to the imaging plate, detector or imaging stand [8] precisely in the correct position according to the desired projection [8] At the moment of irradiation, motionless and lungs and abdomen, the lungs are filled with air, withholding breathing.


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Medical X-ray

[8] Of the standard X-rays, the most common are lung images, covering approximately half of all projection X-rays and about 30% of all radiation studies when excluding dental scans.


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Medical X-ray

The lung image is aimed at taking always standing, so that both PA- (rays from the side of the patient's back) and in the side view, the patient has lungs filled with air.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The prevalence of lung imagery is partly due to the simplicity and speed of the study


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In addition, pulmonary scans are good and useful in evaluating a number of diseases.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In addition to lung diseases, the circulatory system such as cardiac function and aortic pathology can be assessed from pulmonary images.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[49] Bed patients are usually satisfied with a mere frontal image in the pulmonary image.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[8] In pulmonary X-ray examination, the patient incurs a relatively low radiation dose compared to other X-ray examinations or natural background radiation.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[50] [51] For pulmonary X-rays, the pelvic apron may be used as a beam guard outside the imaging area.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[52] [53] Ordinary X-rays of the abdominal region are diagnostically limited compared to pulmonary images.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

From native X-ray scans, an increase in the air content of traction difficulties can be found mainly.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Clear liquid horizontal surfaces may also be visible on mechanical radars.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

A burst in the intestinal area may appear on an ordinary X-ray as air in the free abdominal cavity.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Computed tomography studies, as a more precise research method, have largely supplanted traditional projection imaging in radiographs of the abdominal region.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[54] Ordinary projection X-rays are the basic method of spinal imaging.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Descriptions of the spinal region usually take anterior and lateral projections.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

To imaging root openings, oblique images are taken.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In the scans of the cervical region, the problem of X-ray imaging is the poor vision of the lower part of the wrist.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Vertebrae C7 and T1 may easily remain invisible and the picture is undiagnostic in these respects.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Scans of the thoracic spine are particularly problematic, as even vertebral fractures may go unseen due to fluctuations in tissue densities.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Lumbar scans in lower back pain studies have declined in recent years due to radiation protection.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

However, the study is good compared to other imaging studies as it can be done standing.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Also, in the study of traumatic injuries, an X-ray of the lumbar spine is necessary.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Further examination of Ranga X-rays, if necessary, at least in traumatic cases, usually computed tomography is carried out.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[55] [56] [57] The spinal cord is not imaged in X-ray studies and is challenging imaging even as a magnetic study [58] Leaded breast protectors can be used in scans of the Ranga region in female patients and testicular protection in men.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[59] Skull X-rays have no use in diagnostics of brain diseases in adult humans.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In adults, there is no need for skull imaging even when a skull fracture is suspected, as both brain and cranial trauma can survive on computed tomography at the same time.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[60] A child's skull is usually depicted anteriorly and laterally.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The reasons for the description of the child's skull can include problems with brain pressure, anomalies of the bones of the skull, and examination of the sunt tubing.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Of benign tumors of the bones of the skull in children, epidermal cysts are usually very depicted on ordinary X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Inflammatory problems in the head area of children may appear on X-rays as a roof or thinning of bone tissue.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The brain of newborns can be imaged without beam stress using ultrasound through an open aukile.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The front aukile is usually open until about one year of age.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[61] Nasal sinuses are described on X-ray usually to detect or monitor sinusitis.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Native imaging of the nasal sinuses is one of the most common descriptions in medical radiography.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Much of the descriptions are pointless, since in the acute phase, medication for sinusitis could be started based on clinical signs.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The face has four paired sinuses: cheek and frontal sinuses, sieve compartments, and chitaal sinuses.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The sinuses are best described in a projection called moonlight imaging, where the patient's mouth is open and his chin and nose closed on the imaging plate.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The moonlight image also shows the front parts of the sieve trays and the chital cavity.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The frontal sinuses are better visible in the PA projection, where the patient is photographed with his nose and forehead laid out on the imaging plate.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

A side view of facial cavities can also be taken, which has become less common thanks to computed tomography and MRI scans.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

CT and MRI are used as a further imaging method for chronic sinusitis and tumours.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In CT, bone tissues and soft tissues are better visible in moderation.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Magnetic resonance imaging, on the other hand, is a better option for radiation protection and soft contrast.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In humans, nasal sinuses are not yet developed in children under 6 years of age, and it does not make sense to describe them younger than this.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Forehead and sphenoidal compartments are not conditioned until adulthood, which also affects imageability.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In children, a simple runny nose and crying can cause symptoms of sinusitis.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[62] X-rays of the upper limb skeleton are performed on the collarbone, shoulder joint, upper arm, elbow joint, forearm, wrist, palm and fingers, among others.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[63] The bones of the lower limb include the toes, heel, forefoot, ankle, shin, knee joint, thigh and hip joint.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[64] Mammography often takes an oblique projection [65] in addition to the image of the upper and lower direction, as is the case for depictions of the foot [66] and palm bones [67].


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Common special projections include wrist boating descriptions [68] and lumbar bending images [69].


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Descriptions of all limbs and joints are common, covering about 20% of all radiation examinations when dental scans are removed from the bills.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Despite its prevalence, scans of the limbs and joints only account for about a percent contribution to the total radiological radiological dose of patients.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

So for limb scans, the patient dose is low.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[53] In suspicion of abuse of a child or baby under one year old, a picture of the lungs, pelvis and long bones of the limbs is depicted separately.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

A side view of the child's spine is depicted in suspicion of abuse, and the front and lateral image of the skull.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In addition, either frontal images or slightly oblique projections are depicted of the hands and feet.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

If injuries can be seen on conventional X-rays, one often needs to be photographed as a follow-up examination either magnetic resonance imaging or computed tomography.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[70] Dental projection X-ray scans Clinically invisible findings of dentition are quite common.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

X-ray examination is an important auxiliary in dentistry diagnostics.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

X-rays are additionally taken for the planning, implementation, timing and follow-up of treatment.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Dental X-rays are subject to the same guidelines on radiation protection as other X-rays, and therefore unnecessary X-rays should also be avoided in dentistry.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[71] The most common and preferred intraoral (intraoral) imaging technique has been and is today the parallele technique.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In technology, an image detector is in the patient's mouth, imaging the tooth and image detector as parallel as possible, and the X-ray tube outside the patient.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In parallele technology, the patient is subjected to a very low beam dose and descriptions are easily reproducible without distortion or overlapping projection.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

However, when compared to other dental imaging techniques, description is difficult to learn, and motion imprecision may sometimes occur in images.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[72] Dental radiography can diagnose many diseases of the oral area.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

For example, caries, inflammations, changes in bone structures, developmental cysts, as well as benign and malignant tumors can be detected by intraoral procedures or panoramic scans.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Traumatic accidents are also a common cause of traditional radiographs of the dentition area.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[73] Traditional two-dimensional dentition X-ray studies are performed a lot compared to all X-ray studies, but the radiation dose in them is low.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In recent years, in countries with high living standards, the number of dental X-ray examinations has remained almost the same.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In emerging countries, dental X-rays, on the other hand, have become somewhat more common.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

It is estimated that 480 million dental X-ray examinations are carried out in the world every year, most of them in countries with high living standards.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In addition to projection radiographs, tomography studies have been calculated.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Of all radiation studies, dental X-rays cover about 10 to 20 percent, depending on the state's standard of living.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Despite 480 million studies, dental X-rays cause less than 1 percent of all radiation from health care to the population.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

However, it is possible that all dental X-ray examinations will never be written down.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In Finland, some dental imaging equipment is exempt from the standard X-ray equipment safety licensing practice.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[53] [74] Tomography scans in healthcare X-ray departments have been able to capture clip-scans even before computed tomography became widespread.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Traditional tomography scans were able to reduce the depiction of overlapping structures to the same level at least somewhat.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In tomography scans, one plane of the imaging area was accurately focussed, with structures at other levels partially fading and the selected shooting plane being accurately depicted.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Depending on the device, tomography scans can be taken in linear motion and circular motion.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In circular motion, the source of radiation and film rotate around the patient, in linear motion the tube and film move along a straight line.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Especially in tomography images taken with linear motion, disturbing shadows were often formed from organs outside the imaging plane.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

From traditional tomography scans, orthopantomography has survived as a digitized version of general research even into the 2010s.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[53] [75] In Finland, for example, 200000 orthopantomography studies are carried out annually.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

For panoramic photography, a shoulder cloak may be used as a lead protector outside the shooting area.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[76] Modern dental panoramic imaging (orthopantomography, OPTG) is based on the development night of Finnish professor Yrjö Paatero and Master of Science Timo Nieminen.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[77] Nowadays, for the most part, clip shoots are performed with proprietary computed tomography () modality.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Computed tomographs have started to become common in hospitals since the 80s.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In CT scans, unlike traditional X-rays, the patient lies on a table moving through a hole in a doughnut-like imaging machine.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

CT scans do not present any form of superimposed projection, and images obtained using the technique have very good resolution.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In the technique, the radiation produced by the X-ray tube is limited to a thin quiddle ().


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The object is depicted from several angles and projection measurements from different directions add their own addition to each number value in the image cell.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The CT device therefore measures the corresponding absorption coefficient of each image cell and changes it to the CT scale.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The CT value, called the Hounsfield figure typically ranges between -1000 and 0 in human tissues.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

-1000 Hounsfields corresponds to the absorption coefficient of air and 0 for water.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Clip image computation is called backprojection.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

After summations of image elements, the value of each image element can be solved mathematically, thus producing three-dimensional image information.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Since modality has become widespread, the development of CT devices has been really strong.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Among other things, the devices have accelerated so that the measurement time of one clip is less than a second.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Today, CT devices are capable of shooting on a spiral track as the shooting subject moves without stopping through the imaging device, resulting in shooting up to ten times faster than usual, and image disturbances due to breathing, for example.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[21] [78] X-rays in mass screenings Miniature X-rays have been much used to screen and monitor tuberculosis.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The shooting has originally used a through-light device whose X-ray image formed on the shaders was optically reduced to fit the film size and then shot with a standard camera.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The method allowed low film costs to be achieved, and compared to ordinary lung images, research volumes were able to be multiplied due to low cost.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The first miniature X-ray imaging equipment in Finland was acquired in 1940.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The downside of the method was the high beam dose.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In measurements taken in 1977, the average surface dose was 5.2 mGy.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

At its peak in the 70s, the surface dose might have been 10 mGy, even more so in the earliest decades.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[79] Today, the dose in similar studies is relatively low, but still more than 50% higher than the usual lung image.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[80] Mammography screening is done by mammography imaging.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Mammography is an X-ray of the breast, with the help of which tumors and changes in the breast are examined.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The goal of screening is to find and treat breast cancers early and thus lower breast cancer mortality rates in the population.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Mammogram screening reduces deaths from breast cancer, according to research, when screenings are carried out for women aged 40 to 74.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[81] Mammography screenings routinely describe ap and oblique projections.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[65] Radiography in radiotherapy Radiography is also used in medicine as an aid in radiotherapy for positional verification, hence 'aiming'.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Radiation therapy does not use X-ray treatments as a healing form today, but higher-energy radiation produced by linear accelerators.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In radiotherapy, the patient is given a very high radiation dose, sometimes up to 80 Gy over a long, sometimes several week period.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Radiation therapy is usually administered from several directions each treatment session, so verification of the location of the beamed target is important.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Treatment fields can be verified by imaging the patient with either electronic portal imaging (EPI) or on-board imaging (OBI) rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

EPI scans are not X-ray imaging and are inferior in quality because in them the radiation is highly pervasive megavolt-grade (MV).


Question: Can I go to an X-ray while pregnant?

Medical X-ray

OBI scans are done using an X-ray imaging device integrated into the linear accelerator.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Treatment subject verification scans are compared with dose design scans using bony structures or X-ray positive marker targets.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

For example, in prostate cancer, the treatment target can be certified with gold grains applied to the prostate gland.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[82] [83] [84] Animal radiography X-ray imaging is one of the more commonly used methods in veterinary diagnostics.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

X-ray is a cheap way to obtain diagnostic information about an animal, and the method does not require surgery or other tampering inside the animal.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Although the X-ray examination is painless, the animal still often needs to be sedated or anesthetized for the scan to be successful.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In veterinary medicine, compared to human health care, a lot of pointless studies are carried out globally, from which it is not possible to obtain diagnostically useful information.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[85] [86] Over 100000 animal X-ray examinations are carried out in Finland every year.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

For the success of the X-ray, it is important that the animal is kept immobile during the examination.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Staff or animal escorts are usually acted as catchkeepers.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The need for re-imaging can be reduced by tranquilizing the animal for the duration of the study.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Due to difficult research conditions, radiation safety is not always realized in animal X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

It is therefore important to pay attention to the radiation safety of staff, catchers and other persons and to use radiation protection equipment.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[87] In addition to standard X-rays today, animal X-rays are carried out using computed tomography equipment built for animals.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[21] The fluoroscopy studies The patient is used to take a real-time series of images instead of a single image.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

This is a useful method, especially in radiological and cardiological angiography studies, as well as for the guidance of procedures.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Examination studies are greatly reduced due to the generalization of computed tomography, as well as ultrasound and magnetic resonance imaging.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Even previously common urogenital scans have receded from the way of new imaging methods, but in procedures, through-light is still used.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

For example, in Finland, of all medical X-ray examinations, radiological and cardiological procedures and angiography studies cover less than 2% of all X-ray examinations.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Worldwide, the figure ranges from 1.3 to 3.8%.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[88] [89] [90] However, X-rays of the lungs with a throughput device may still be quite common in countries with fewer physicians in terms of population proportions than in Western countries or Japan.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[53] Radiation protection in X-ray scans The purpose of radiation shielding is to prevent adverse reactions to patients and adherents from X-ray radiation.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[91] Radiation protection is implemented as defined by the ICRP if: The benefit of X-ray imaging outweighs the resulting harm (principle of entitlement).


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[91] In a single imaging situation, radiation exposure is kept as low as reasonably possible (optimization or ALARA principle).


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[91] In the case of radiation use, workers' radiation exposure does not exceed the established dose limits (individual protection principle).


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[91] In the implementation of the principle of entitlement, the doctor who sends the patient has a precise position.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The dispatching physician must have basic knowledge of the health effects of radiation and the radiation dose of the study they request.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Careful clinical examination of the patient may indicate that an X-ray may not be required.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The referral physician must also consider the patient's previous examinations and alternative methods of examination, such as the possibility of an ultrasound or MRI, so that they can make legitimate X-ray referrals to their patient.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The referral doctor should also make sure if the patient is pregnant.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[92] [93] In the imaging situation, the radiographer must carry out the examination in accordance with the ALARA principle at as low as reasonably possible (ALARA = As Low As Reasonably Achievable).


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The radiographer must select on an examination basis the correct quality voltage description and the appropriate amount of current, so that the radiation dose is as low as possible, but the picture diagnostic.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The radiographer selects the appropriate shooting distance and additional filtering per shot.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The imaging area shall be precisely delimited to reduce the radius stress.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The pictures would be good to get successful the first time.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Avoiding renewal is important radiation safety work.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[91] [92] [93] Radiation shields shall be used wherever possible.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

If an assistant is required to hold the patient, they must also be properly protected.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The attachment should be primarily a relative, rather than personnel from the X-ray unit.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

X-ray unit staff still make sure that the patient or catcher is not pregnant.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[94] The individual protection principle applies to radiation exposure of workers.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Radiography situations, equipment and working methods shall be arranged so that the dosage limits specified in the legislation are not exceeded under any circumstances.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[95] Dose limits do not limit the patient in medical studies or treatments.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[96] Radiation protection equipment Radiation protection equipment should be used by radio-sensitive organs when radio-sensitive organs are close to the radio-field.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Also in pediatric patients should always wear radiation protectors.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[46] Radiation shields are available in a variety of different materials.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The most common materials used are lead vinyl, lead mixes, and lead-free materials.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Lead vinyl is environmentally harmful, which is why more environmentally friendly ray shields have been developed.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The lead blend shield is about 30% lighter than lead vinyl protection and contains less environmentally harmful lead.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Lead-free radiation shields are made from material other than lead as their name suggests.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

0.5mm lead equivalent shielding attenuates 97% of radiation in the beam field itself and 99% of diffuse radiation at a voltage of 80 kV.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Lead-free shields cannot be used in nuclear medicine, as they do not protect against gamma radiation.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[97] Radiation shields can be cleaned by hand with a lukewarm soap solution.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Not all materials are suitable, for example, alcohol cleaning.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Radiation shields should be stored in the stands intended for them to remain intact.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Radiation shields should be inspected every year.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The shields are inspected visually and X-rays to detect possible holes and fractures.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[98] Side effects of X-ray imaging The adverse reactions of ionizing radiation, such as X-rays, are divided into two groups: deterministic, that is, direct effects due to a large number of cell deaths, and stochastic, i.e. random effects arising from of lineage changes in one particular divisible cell.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Deterministic effects rarely occur on X-rays anymore, but have been reported, for example, in the United States by a procedure radiologist.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

10—17 a.m.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The fetus of a woman at the week of gestation may suffer a brain injury if the fetal brain dose exceeds 100 mGy, for example, in descriptions of the mother's pelvic region.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[99] Stochastic side effects can, in principle, arise from any small radius stress.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Only the probability of the effect increases with an increase in the radius dose.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The side effect is based on the ability of ionizing radiation to break the strand of the DNA molecule.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

More often than not, a cell knows how to fix a DNA break, but sometimes the cell “miscorrects” the DNA, allowing a precursor to a cancer cell to emerge.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Often altered DNA is followed by controlled cell death.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

For statistical reasons, accurate data on the effect of very low beam doses can never be obtained; theoretical models must be relied upon at low beam doses.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[100] Probability of adverse reactions The likelihood of adverse reactions from radiation increases as radiation stress increases.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The age of the patient also affects the risk.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

People under 35 have a higher lifetime risk of developing cancer from the radiation they receive from an X-ray examination.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

However, in practice, the likelihood of developing cancer due to X-ray imaging is small.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Each year, a person receives an average effective dose of 1.7 millisieverts of radiation, most of which is nature's own background radiation.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

A dose of about 100 mSv results in an observable likelihood of developing cancer.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[50] [51] [101] [102] Research-specific radiation doses in healthcare The data presented in the table correspond to the average Finnish radiation exposure according to STUK's study.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

There may be considerable site-specific differences in radius doses.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

A variation of more than 30 percent is not uncommon.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

The thickness of the patient considerably affects the dose used in the description.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In slender patients, a lower beam dose is sufficient to achieve diagnostic image quality.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

PA direction refers to the imaging of the X-ray tube on the side of the patient's back.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[50] [51] According to a UN global report, man receives an average of 0.4 mSv of radiation annually from all X-ray examinations.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In Finland, the corresponding figure is 0.5 mSv, according to a report by the Finnish Radiation Safety Authority.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Both figures lack isotope imaging, which are therefore not considered X-ray studies.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

In Finland, radiation from all X-ray studies covers approximately 13.5 percent of total radiation and worldwide average 14.2 percent of total human radiation dose.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Although more quantitatively ordinary X-rays are performed than computed tomography studies, so still the radiation dose from computed tomography studies makes a more significant contribution to the total beam dose than standard X-rays.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

[53] [103] Sources Literature Citation error, replace with {{cite book| author = Kragh, Helge| title = Quantum Generation| location = Helsinki| publisher = Terra Cognita| year = 2002| version = Translated by Kimmo Pietian | id = ISBN 952-5202-53-4| pages = 49, 50}} , replace with {{cite book| author = Möller E & Reif E| title = Pocket Atlas of Radiographic Positioning| number = 2-5| location = New York| publisher = Thieme| year = 2009| id=ISBN 978-3-13-107442-3| language = Transclusion error: {{en}} is only for use in File namespace.


Question: Can I go to an X-ray while pregnant?

Medical X-ray

Use {{lang-en}} or {{en icon}} instead.| accessdate = 1.7.2011| page = X—XII, 62, 88—158, 134, 144—148, 162—212, 228, 288}} Citation error, replace with {{cite book| author = P. Vuoria, A. Karttunen, J. Pyhtinen & U. | title = X-ray instructions| location = Oulu| publisher = OY Ultima Thule| year = 1984| id = ISBN 951-9160-02-9| pages = 5, 8, 9, 13}} Citation error, replace with {{cite book| author = Soimakallio, Seppo — Kivisaari, Leena — Manninen, Hannu — Svedstöm, Erkki — Tervonen, Osmo| title = Radiology| location = Sink| publisher = WSOY| year = 2005| id = ISBN 951-0 -29626-0| pages = 33, 34, 39—40, 72, 75, 78—80, 84, 89—91, 102, 316, 385, 297—299, 492, 521, 534—536, 584, 595—597}} Citation error, replace with {{cite book| author = Rosberg, Jukka| title = Dental Radiology| location = Oulu| publisher = Oulu University Weight| year = 1997| id = ISBN 952-90-8753-5| pages = 10-13, 18—24, 92-93}} Citation error, replace with {{cite book| author = Jantunen, Hanna — Kortelainen, Katherine — Lehkonen, Miia — Wood, Päivi| title = Radiation protection of staff and patients in medical radiation| location = Tampere| publisher = Hämeenlinna Offset team ky| year = 2006| version = Finnish Radiographers' Association ry| id = ISBN 951-98545-5-X| pages = 5, 9, 17—19 26—27}} References on the topic elsewhere Category:Radiology Category:Key articles of screening


Question: Who was Ivar Smilga?

Ivar Smilga

Ivar Tenisovich Smilga (2 December 1892, Ajola, Livonia Governorate, Russian Empire — 10 January 1937, Moscow, Soviet Union) was a Latvian-born revolutionary Bolshevik.


Question: Who was Ivar Smilga?

Ivar Smilga

He served 1917—1918 as Chairman of the Regional Committee of Russian Councils in Finland, dominated by Bolsheviks, and in the 1920s held high positions in the Communist Party of the Soviet Union (NKP).


Question: Who was Ivar Smilga?

Ivar Smilga

Born Life in Livonia, Smilga was the son of a forestry worker killed in connection with the 1905 Russian Revolution who joined the Social Democratic Labour Party in 1907.


Question: Who was Ivar Smilga?

Ivar Smilga

He began in 1909 studies at Moscow University, but was dismissed the following year due to his revolutionary activities.


Question: Who was Ivar Smilga?

Ivar Smilga

After doing underground party work in Moscow, he was imprisoned in 1911 and exiled for three years to Vologda Governorate.


Question: Who was Ivar Smilga?

Ivar Smilga

After his release, he resumed his activities in Saint Petersburg, receiving another deportation in 1915 to Yeniseisk Governorate, Siberia.


Question: Who was Ivar Smilga?

Ivar Smilga

Smilga became vacant after the February Revolution in 1917 and was soon afterwards elected to the Central Committee of the Bolshevik Party.


Question: Who was Ivar Smilga?

Ivar Smilga

He was subsequently a member of the Central Committee 1917—1921 and 1925—1927 and a candidate member 1922—1923 and 1924—1925.


Question: Who was Ivar Smilga?

Ivar Smilga

In September 1917, the Bolsheviks won an absolute majority in the Assembly of Russian Soldiers and Workers Councils of the Finnish Territory, when Smilga was elected Chairman of the Finnish Regional Committee.


Question: Who was Ivar Smilga?

Ivar Smilga

He was also part of the leadership of Tsentrobalt, who managed the Russian Baltic Fleet.


Question: Who was Ivar Smilga?

Ivar Smilga

During the October Revolution, Smilga sent navy troops and ships from Finland in support of the revolution.


Question: Who was Ivar Smilga?

Ivar Smilga

He was also a key figure in Bolsheviks pressuring the Finnish Social Democrats in November 1917 to undertake their own revolution.


Question: Who was Ivar Smilga?

Ivar Smilga

During the Finnish Civil War, Smilga was named in February 1918 as the Plenipotentiary Diplomatic Representative of Soviet-Russia to Red Finland.


Question: Who was Ivar Smilga?

Ivar Smilga

With the war ending in defeat for the Finnish Reds, Smilga fled back to Saint Petersburg.


Question: Who was Ivar Smilga?

Ivar Smilga

During the Russian Civil War, Smilga commanded the 7th Army of the Red Army on the Ural Front.


Question: Who was Ivar Smilga?

Ivar Smilga

In the Polish—Soviet-Russian War of 1920, he served as a commander alongside Mikhail Tuhachevsky.


Question: Who was Ivar Smilga?

Ivar Smilga

Smilga's other assignments included those of Vesenkha (1921—1928) of the Soviet Economic Council as well as the vice president of the State Planning Committee Gosplan (1924—1936).