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nouna unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
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nounGerman physicist who discovered x-rays and developed roentgenography (1845-1923)
Definition that contains roentgen
- encephalography roentgenography of the brain after spinal fluid has been replaced by a gas (usually oxygen); produces an encephalogram
- angiography roentgenographic examination of blood vessels after injection of a radiopaque contrast medium; produces an angiogram
- lymphography roentgenographic examination of lymph nodes and lymph vessels after injection of a radiopaque contrast medium; produces a lymphangiogram
- pyelography roentgenography of the kidney and ureters (usually after injection with a radiopaque dye)
- arteriography roentgenographic examination of arteries
- cholangiography roentgenographic examination of the bile ducts after a contrast medium has been injected
- myelography roentgenography of the spinal cord to detect possible lesions (usually after injection of a contrast medium into the subarachnoid space)
- venography roentgenographic examination of veins
- lymphangiography roentgenographic examination of lymph nodes and lymph vessels after injection of a radiopaque contrast medium; produces a lymphangiogram
- arthrography roentgenographic examination of a joint after injection of radiopaque contrast medium; produces an arthrogram