test 1 review Flashcards
what is the customary equivalent for Gray?
RAD
the units used for occupational radiation monitoring (conventional and SI)
REM and Sievert
list of customary units
Roentgen, RAD, REM, Curie
list of SI units
Air kerma, Gray, Sievert, Becquerel
convert 0.1 Gy to mGy
100 mGy
the SI equivalent of 300 REM is ______
3 Sv
This man invented the fluoroscope in 1896
Thomas Edison
the light emitted by the input phosphor is
directly proportional to the number of x-rays received
the function of image intensifier __________________
increase image brightness
flux gain x minification gain = ____________-
brightness gain
the automatic adjustment of kVp and/or mA as needed to maintain the contrast and density of fluoroscopic image is _______________
automatic brightness control
true/false: image-intensified fluoro, the mA used during imaging is considerably lower than in the radiographic mode
true
the ____________ is coated with light-emitting crystals to absorb electrons and emit light
output phosphor
distortion of image-intensified fluoroscopic images that appear as unequal magnification is ___________
pincushion appearance
digital fluoroscopy is improved by using _______
a CCD