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8 Cards in this Set

  • Front
  • Back
CT/CAT
CT = Computed Tomography

CAT= Computerized axial tomopgrahy

pt moves slowly through doughnut shaped CT machine, xray tube rotates around body.

translates images to corss sectional pictures of each body region scanned
Xenon CT
brain scan enhanced with xenon gas.

inhaled xenon travels through bloodstreams > tissues. no xenon trace in brain indicated stroke is occurring
DSR
DSR = Dynamic Spatial Reconstruction

ultrafast CT scanners, 3D images of body organs from any angle; visualize heart beating and blood flowing through blood vessels, can determine heart defects, constricted or blocked BVs, status of coronary bypass grafts
DSA
DSA = DIGITAL SUBTRACTION ANGIOGRAPHY

(angiography = vessel pics)

unobstructed view of small arteries; often used to ID bloackges in arteries
PET
PET = positron emission tomography

observes metabolic processes; pt given injection of radioisotopes that attach to biological molecules. radioisotopes absorbed by most active brain cells > high gamma rays emmitted > computer produces live action picture > vivid colors mark brain activity

most effetive use for pt with mental illnes, stroke, epilepsy
Sonography/Ultrasound
sound waves
MRI
MRI=magnetic resonance imaging

useful when xrays and CT scans are weak; primarily maps body content of H+; subjects body to magnetic field > H+ radio waves enhanced > energy released from waves creates image

MRI distinguishes body tissues based on h2o content.
MRS
MRS=magnetic resonance spectroscopy

maps distribution of elements other htan H_ to reveal more about how disease changes body chemistry