537.True regarding flat plate
detectors used in fluoroscopy
a.use amorphous silicon detectors with
caesium iodide scintillators
b.DQE
is comparable to that of image intensifier (about 65%)
c.has increased dynamic range and
improved spatial resolution
d.high contrast resolution (3lp mm-1)
e.no distortion in the displayed image
ANS OF PREVOUS BLOG
549.True regarding the requirements of
CT scanner detectors
a.small size in order to allow good
spatial resolution
b.to have high detection efficiency
c.to have fast response with
negligible afterglow
d.to have norrow dynamic range
e.to have a stable ,noise-free
response
549.abce ----CT scanner detectors should have to have fast
response with negligible afterglow and have wide dynamic range. (Chapter 6,
page no.107 ,second edition (2008),Farr’s Physics for Medical Imaging).
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