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Med. Term. Review14

Radiography Terms

Rem (roentgen-equivalent man) radiation exposure is measured by them
dosimetry process of measuring the amount of radiation exposure, as detected by a film badge (worn by people working in radiology department) and measured by a dosimeter.
lead apron used to shield parts of the body that do not need to be x-rayed. Lead is extremely dense and x-rays can not pass through it. Also worn as protection by radiologist.
scout film preliminary x-ray taken to provide a view of an area before radiopaque contrast dye is administered.
x-ray cassette and buckey cassette - case that holds the x-ray film. Buckey - adjustable frame mounted wall, beneath x-ray table, or a mobile frame on wheels. It positions and holds x-ray cassette.
radiopaque areas of high density on an x-ray. (white color) Ex: bone or body organ
radiolucent areas of low density on an x-ray. (black color) Low radioLucent. Ex: air in lungs or body cavity
roentgenography radiography; process of recording x-rays
gallium-67 (radiopharmaceutical drug that emits gamma rays) IV drug that detects inflammation, infection, and benign, and cancerous tumors.
indium-III (RP drug that emits gamma rays) IV drug used to look for cancerous tumors or cancerous cells of endocrine system, ovary, or colon.
iodine-123 and iodine-131 (RP drug) IV drug used to image the thyroid gland. HINT: iodine deficiency causes thyroid issues.
krypton-81m (RP drug) Inhaled gas used to image the lung.
technetium-99m (RP drug) Iv drug used to image many different areas of the body. (most common radiopharmaceutical used in nuclear imaging)
thallium-201 (RP drug) IV drug used to image the heart. (metal is so soft it can be cut with a knife)
xenon-133 (RP drug) Inhaled gas used to image the lungs.
MRI scan Does not use x-rays. No radiation exposure. Gadolinium is a metallic element that responds to a magnetic field. It can be injected by IV or into a body cavity to produce an enhanced MRI image.
CT/CAT scan uses x-rays and a computer to create an image. Creates 2D images or slices of parts of the body. It scans the body.
electron beam tomography (EBT) uses a beam of electrons and a computer to create an image. Full body scan. Used for screening tests.
positron emission tomography (PET) uses radioactive substances that emit positrons. Is also tomography. Produces images of the physiology and metabolism of an organ.
scintigraphy process of recording a point of light (photon). The computer compiles the flashes of light into a 2D image.
Created by: 100001033451881