FRCR MCQ ----INTENSIFYING SCREEN
105.True regarding intensifying
screen is/are
a. polyester plastic used as screen support
b.reflecting coat
made of titanium dioxide
c.phosphor crystals remain suspended in a plastic
containing
substance
d.protective layer largely composed of cellulose compound
e.reflecting layer is indispensible component of screen.
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ANSWER IN THE NEXT BLOG
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Q AND A OF PREVIOUS BLOG==============
195.True regarding MTF is/are
a.describe the ability of imaging system to reproduce the information
b.an MTF of 0 (zero) is a perfect system
c.MTF of focal spot increases with magnification used
d. intensifying screen MTF decreases with magnification
e.magnification reduces the frequency of information to be resolved
ANS-----abe--MTF of focal spot decreases with magnification
used,larger the focal spot
more drastic the deterioration of MTF .
Intensifying screen MTF increases with
magnification as
magnification reduces the frequency of information to be
resolved . ---.[Chapter 15,Page 235-36,
4th edition ,1990
reprinted 2010 , Christensen’s Physics of 189. Diagnostic
radiology].
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