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 |
an image of an area of the body that is formed from a grouping of x-rays on a computer. CAT scans are used to make a diagnosis in medical treatment. CAT stands for computerized axial tomography. |
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] |