Chapter 20 vocab Flashcards
contrast studies
radiopaque material thats injected to obtain contrast with surrounding tissue
gamma camera
machine to detect gamma rays emitted from radiopharmaceuticals during scanning for diagnostic purposes
gamma rays
high energy rays emitted by radioactive substances in tracer studies
half-life
time it takes for for a radioactive substance to lose half its radioactivy by discentigration
intervention radiology
therapeutic or diagnostic procedures performed by a radiologist
in vitro
process, test or procedure that is performed measured or observed outside of a living organism
in vivo
process test or procedure that is performed within a living organism
ionization
transformation of electrically neutral substances into electrically charged particles
magnetic resonance imaging
magnetic filed and radio waves produce sagittal, cornal and axial images of the body
nuclear medicine
medical speciality that uses radioactive substances in the diaggnosi of disease
positron emission tomography
positron emitting radioactive substances given intravenously to create a cross sectional image of cellular metabolism based on local concentrations of radioactive substance
radioimmunology
test combining radioactive chemicals and antibodies to detect minute quantiles of substances in patients blood
radioisotope
radioactive form of an element substance
radiolabeled compound
radiopharmaceutical; used in nuclear medicine studies
radiology
medical speciality concerned with the study of x-rays and their use in the diagnosis of disease
radiolucent
permitting the passage of x-ray
appear black on x-ray images
radionuclide
radioactive form of an element that gives off energy in the form o radiation
radiopaque
obstructing the passage of x-rays
appear white on x-ray images
radiopharmaceutical
radioactive drug that is administered safely for diagnosis and therapeutic purposes
scan
image of a area, organ or tissue of the body obtained from US, CT, MRI, radioactive tracer studies
scintigrahy
diagnostic nuclear medicine test using radiopharmaceuticals and gamma camera to create images
single photon emission computed tomography
radioactive tracer is injected intravenously and a computer re constructs a 3D image based on a composition of many views