Glossary of Chapter 20: Language of Medicine

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motion picture techniques to reocrd x-ray images during fluoroscopy
computed tomography (CT)
x-ray proceudre: cross seciton image of a segment is producted; also a CAT
contrast studies
materials (contrast media) injected to obtain contrast with surrounding tissue on film
emission of glowing light resulting form exposure to and absorption of radiation from x-rays
process of using x-rays to produce fluorescent image on an image intesifier
gamma camera
machine to detect radiopharmaceuticals in the body for diagnostic purposes (scintiscanner)
gamma rays
high-energy rays emitted by radioactive substances
time required for a radioactive substance to lose half its radioactivity to disintegration
interventional radiology
therapeutic procedures that are performed by a radiologist
in vitro
outside a living organism
in vivo
in a living organism
transformation of electrically neutral substances into electrically charged ones
labeled compound
magnetic resonance (MR)
magnetic field and radio waves form sagittal, coronal, and axial iamges of body
nuclear medicine
medical specialty that studies use of radioactive substances
positron emission tomography (PET)
radioactive substances are givne intravenously and tehn emit psoitrons, which create a cross-sectional image of the metabolism of the body, representing local concentration of the radioactive substance
test that combines the use of radioactive chemicals and antibodies to detect minute quantities of substances in a ptient's blood
radioactive form of a substance; radionuclide
stuyd of x-rays
permitting passag eof most x-rays; appear black on film
radioactive chemical element that gives off energy in the form of radiation; radioisopte
obstructing the passage of x-rays. appear white on film
radioactive drug for diagnostic purpose

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