| actinic |
of or pertaining to the chemical property of ultraviolet radiation and x-rays that produces photochemical effects. |
| actinic rays |
electromagnetic radiation, such as x-rays or ultraviolet light, that can produce an image on a photographic emulsion. |
| angiogram |
an x-ray image of blood vessels that is taken after injecting a substance that absorbs x-rays into the blood. |
| arteriography |
examination of the arteries by x-ray after injection with a radiopaque dye. |
| barium sulfate |
an opaque insoluble white powder that is used as a pigment in paints and a filler for plastics and textiles, and is swallowed as a diagnostic aid in x-ray examination of the stomach and intestines. |
| bremsstrahlung |
electromagnetic radiation, such as x-rays, produced by the sudden deceleration or acceleration of an electron caused by its approach to an atomic nucleus. |
| CAT scan |
a cross-sectional image formed by a computerized combination of x-rays taken along a selected axis of the body, used as a diagnostic tool in medical treatment; computerized axial tomography scan. |
| dental hygienist |
a licensed specialist in preventive dental care, whose practice includes cleaning and x-rays, and who often works in a dentist's office. |
| dosimeter |
a portable instrument that measures amounts of radiation, such as gamma rays or x-rays, to which a person has been exposed. |
| electromagnetic wave |
a wave that contains a magnetic and electric component and that is created by an accelerating electric charge, such as a radio wave, x-ray, or light. |
| encephalogram |
an x-ray photograph of the spaces of the brain normally filled with cerebrospinal fluid, partially replaced for the procedure by air or dye. |
| fluorescence |
the giving off of electromagnetic radiation, esp. in the form of visible light, during or after exposure to radiation from another source such as ultraviolet light or x-rays. [1/2 definitions] |
| fluoroscope |
a fluorescent screen used with x-rays or other radiation for viewing the internal structure of opaque objects such as the human body. |
| mammogram |
an x-ray picture of the breast, usu. made to check for cancerous growths. |
| mammography |
photography of the breast by x-ray, usu. for detection of cancerous growths. |
| myelogram |
an x-ray photograph of the spinal cord that is taken after a radiopaque substance has been administered. |
| pneumoencephalogram |
an x-ray of the spaces in the brain that contain fluid, after the replacement of the cerebrospinal fluid by air or gas. |
| radiation sickness |
sickness induced by overexposure to ionizing radiation such as x-rays or gamma rays, resulting in nausea, diarrhea, bleeding, hair loss, sterility, and often death. |
| radio- |
radiant energy; x-rays. [1/3 definitions] |
| radiogram |
an x-ray print; autoradiogram; radiograph. [1/2 definitions] |
| radiograph |
an image produced by the action of x-rays or other forms of radiation on a photographic film; autoradiogram; radiogram. [2 definitions] |