DSA Exam Actual Exam Questions and Answers |Latest 2025 Update with Complete Solution Rated A+

DSA Exam Actual Exam Questions and Answers |Latest 2025 Update with Complete Solution Rated A+ Digital imaging - Answer- electronic detectors convert digi within seconds without film Direct - Answer- x ray to digi Indirect - Answer- x ray to light to digi Receptor considerations - Answer- spatial res, pixel size/pitch, fill factor MTF modular transfer frequency - Answer- inherent in system change film speed CNR - Answer- more signal less noise DQE - Answer- digital quantum efficiency (quantum=mAs) Fill factor - Answer- % of pixel sensitive to incoming beam, conversion of beam to light Dead zone - Answer- fails to relieve signal, between fill factor elements Dark noise - Answer- signal without rad Uniformity - Answer- pixel response/readout, receptor response, tiling Pixel area - Answer- exposed by beam Spatial resolution - Answer- pixel size to element Pixel pitch - Answer- dead/passive element size decreases ratio Absorption - Answer- Z/atomic #, K/rad edge, crystalline prop/indirect, power vs needles, thickness/resolution, direct DQE Digital image storage - Answer- soft copy online, printed film, permanent disc, high res rad room Subtraction angiography - Answer- vessels free of superimposed disturbing noise Mask image - Answer- positive image of same area without contrast/prior to contrast admin Darkroom technique - Answer- positive image without contrast, negative image (angio) with contrast (bony cancel each other out, left with vessels) Subtraction principle - Answer- pt motion causes artifacts may hamper pepper diagnosis