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Physics of Med Rad

Medical Radiation

QuestionAnswer
Fluoroscopy viewing dynamic studies of the human body
Flux gain number of output light photons/number of input x-ray photons
Minification gain ratio of the square of the diameter of the input phosphor to the square of the diameter of the output phosphor
Brightness Gain minification gain x flux gain
Conversion factor ratio of the intensity of illumination at the output phosphor to the radiation intensity at the input phosphor
Interventional radiology a subspecialty of radiology in which minimally invasive procedures are performed using image guidance
angiography imaging the blood vessels for abnormalities using various contrast media
Balloon angioplasty/stent opening of narrow or blocked blood vessels using a balloon
Chemoembolism delivering cancer treatment directly to a tumour through its blood supply
Multified image intensification allows focal point change to reduce field of view and magnify the image
Image matrix a two-dimensional array of numbers in rows and columns
Dynamic range the number of shades of gray that can be represented (measured in bit)
CT number numeric value of each pixel
photostimulated luminescence the release of stored energy within a phosphor by stimulation with visible light, to produce a luminescent signal
Created by: owise1