Sometimes, dyspepsia is a more sudden, noticeable (acute) sensation. Depending on the cause of the dyspepsia, people may have other symptoms such as a poor appetite, nausea, constipation, diarrhea, flatulence, and belching. For some people, eating makes symptoms worse. For others, eating relieves symptoms.
An X-ray machine is essentially a camera. Instead of visible light, however, it uses X-rays to expose the film. X-rays are like light in that they are electromagnetic waves, but they are more energetic so they can penetrate many materials to varying degrees.
How X-rays work. An X-ray is a form of electromagnetic radiation that, when passed through an object, creates shadows of the structures within that object. X-rays pass through light molecular weight atoms like hydrogen, carbon, nitrogen and oxygen. These atoms make up skin, muscles and other soft tissues.