An ultrasound scan is a medical test that uses high-frequency sound waves to capture live images from the inside of your body. It’s also known as sonography. The technology is similar to that used by sonar and radar, which help the military detect planes and ships.
http://www.healthline.com/health/ultrasound
sound with a frequency greater than 20,000 Hz, approximately the upper limit of human hearing. 2. Medicine/Medical. the application of ultrasonic waves to therapy or diagnostics, as in deep-heat treatment of a joint or imaging of internal structures. Compare ultrasonography. Origin of ultrasound.
http://www.dictionary.com/browse/ultrasound
Fetal ultrasound. Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is no different from 'normal' (audible) sound in its physical properties, except in that humans cannot hear it. This limit varies from person to person and is approximately 20 kilohertz (20,000 hertz) in healthy, young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz.
https://en.wikipedia.org/wiki/Ultrasound
An abdominal ultrasound takes pictures of the organs and other structures in your upper belly. It uses sound waves to show images on a screen. Areas that can be checked include the: Abdominal aorta . This large blood vessel passes down the back of the chest and belly.
http://www.webmd.com/digestive-disorders/abdominal-ultrasound
Ultrasound is a type of imaging. It uses high-frequency sound waves to look at organs and structures inside the body. Health care professionals use it to view the heart, blood vessels, kidneys, liver, and other organs. During pregnancy, doctors use ultrasound to view the fetus. Unlike x-rays, ultrasound does not expose you to radiation.
https://medlineplus.gov/ultrasound.html
Abdominal ultrasound is done to: 1  Find the cause of belly pain. 2  Find, measure, or monitor an aneurysm in the aorta. 3  Check the size, shape, and position of the liver.  Look for gallstones, inflammation of the gallbladder, or blocked bile 1  ducts. Learn the size of an enlarged spleen and look for damage or disease.
http://www.webmd.com/digestive-disorders/abdominal-ultrasound
A. the computers help the doctors (in ultrasound cases) to interpret/convert the ultrasound waves into a specific imaging showed in the monitor. by that a doctor can find what is normal or not inside the patient's body.
http://medical-dictionary.thefreedictionary.com/ultrasound
Our Living Language : Many people use simple ultrasound generators. Dog whistles, for example, produce tones that dogs can hear but that are too high to be heard by humans. Sound whose frequency is higher than the upper end of the normal range of human hearing (higher than about 20,000 hertz) is called ultrasound.
http://www.dictionary.com/browse/ultrasound
Abdominal ultrasound is done to: Find the cause of belly pain. Find, measure, or monitor an aneurysm in the aorta. An aneurysm may cause a large, pulsing lump in the belly. Check the size, shape, and position of the liver. It may also check for problems of the liver.
http://www.webmd.com/digestive-disorders/abdominal-ultrasound
sound waves at the very high frequency of over 20 kHz (vibrations per second). Ultrasound has many medical applications, including fetal monitoring, imaging of internal organs, and, at an extremely high frequency, the cleaning of dental and surgical instruments.
http://medical-dictionary.thefreedictionary.com/ultrasound
what is an ultrasound
An ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing.