Mammography Registry Review III Questions And
Answers With Verified Quiz
which target/filtration combo is NOT used in conventional mammography units? ANS
tungsten/tungsten
kv range most useful in maximizing contrast in breast tissue ANS 17-24
the smaller the anode angle, the ____ the heel effect bc there is increased absorption of the rays ANS
larger
height and angle of compression paddle is considered to increase ------- of compression paddle ANS
structural strength
main difference b/w mammo and x-ray grids? ANS mammo grid has lower grid ratio
the smaller the target angle, the _____ the focal spot size ANS smaller
digital mammography systems utilize _____ instead of a cassette ANS detector and electronic system
on characteristic curve:
base + fog recorded at _____
highest exposure recorded at ____ ANS toe, shoulder
graph shift to left or right indicates _____ ANS differing film speeds
curve of faster film is positioned to ____ of curve of slower film ANS left; (requires less exposure to
produce any optical density)
air bleed time refers to ______ ANS time taken for air trapped in cassette to dissipate
, density at chest wall area of wire-mesh image should be b/w ___ & ____ ANS 0.7-0.8
number of test objects of each group type visible in phantom image should not decrease by more than
___. ANS one-half
repeated film ANS resulted in additional exposure to patient
reject film ANS all discarded film
simplest way to confirm that darkroom fog test failed due to safelight problem ANS repeat test
w/safelight off
Medium density evaluates ANS film speed
density difference evaluates ANS image contrast
base + fog level evaluates ANS level of fog present in processing chain
fluorescent tubes should be replaced____ and all at the same time b/c ANS every 18-24 months; they
decrease in brightness with age
whenever test fails (QC), first corrective action is to ANS verify that equipment is operating correctly,
then repeat test
medical physicist/equipment service personnel called if ____ ANS problem cannot be isolated or
corrected by mammographer
sensitometer step with density closest to but not less than 1.20 ANS MD-mid density; sometimes
recorded as speed index
calculate DD ANS density closest to 2.20-density closest but not less than 0.45
Answers With Verified Quiz
which target/filtration combo is NOT used in conventional mammography units? ANS
tungsten/tungsten
kv range most useful in maximizing contrast in breast tissue ANS 17-24
the smaller the anode angle, the ____ the heel effect bc there is increased absorption of the rays ANS
larger
height and angle of compression paddle is considered to increase ------- of compression paddle ANS
structural strength
main difference b/w mammo and x-ray grids? ANS mammo grid has lower grid ratio
the smaller the target angle, the _____ the focal spot size ANS smaller
digital mammography systems utilize _____ instead of a cassette ANS detector and electronic system
on characteristic curve:
base + fog recorded at _____
highest exposure recorded at ____ ANS toe, shoulder
graph shift to left or right indicates _____ ANS differing film speeds
curve of faster film is positioned to ____ of curve of slower film ANS left; (requires less exposure to
produce any optical density)
air bleed time refers to ______ ANS time taken for air trapped in cassette to dissipate
, density at chest wall area of wire-mesh image should be b/w ___ & ____ ANS 0.7-0.8
number of test objects of each group type visible in phantom image should not decrease by more than
___. ANS one-half
repeated film ANS resulted in additional exposure to patient
reject film ANS all discarded film
simplest way to confirm that darkroom fog test failed due to safelight problem ANS repeat test
w/safelight off
Medium density evaluates ANS film speed
density difference evaluates ANS image contrast
base + fog level evaluates ANS level of fog present in processing chain
fluorescent tubes should be replaced____ and all at the same time b/c ANS every 18-24 months; they
decrease in brightness with age
whenever test fails (QC), first corrective action is to ANS verify that equipment is operating correctly,
then repeat test
medical physicist/equipment service personnel called if ____ ANS problem cannot be isolated or
corrected by mammographer
sensitometer step with density closest to but not less than 1.20 ANS MD-mid density; sometimes
recorded as speed index
calculate DD ANS density closest to 2.20-density closest but not less than 0.45
