test 1 review

Question 1

what is the customary equivalent for Gray?

Answer 1

RAD

Question 2

the units used for occupational radiation monitoring (conventional and SI)

Answer 2

REM and Sievert

Question 3

list of customary units

Answer 3

Roentgen, RAD, REM, Curie

Question 4

list of SI units

Answer 4

Air kerma, Gray, Sievert, Becquerel

Question 5

convert 0.1 Gy to mGy

Answer 5

100 mGy

Question 6

the SI equivalent of 300 REM is ______

Answer 6

3 Sv

Question 7

This man invented the fluoroscope in 1896

Answer 7

Thomas Edison

Question 8

the light emitted by the input phosphor is

Answer 8

directly proportional to the number of x-rays received

Question 9

the function of image intensifier __________________

Answer 9

increase image brightness

Question 10

flux gain x minification gain = ____________-

Answer 10

brightness gain

Question 11

the automatic adjustment of kVp and/or mA as needed to maintain the contrast and density of fluoroscopic image is _______________

Answer 11

automatic brightness control

Question 12

true/false: image-intensified fluoro, the mA used during imaging is considerably lower than in the radiographic mode

Answer 12

true

Question 13

the ____________ is coated with light-emitting crystals to absorb electrons and emit light

Answer 13

output phosphor

Question 14

distortion of image-intensified fluoroscopic images that appear as unequal magnification is ___________

Answer 14

pincushion appearance

Question 15

digital fluoroscopy is improved by using _______

Answer 15

a CCD

Question 16

true/false: when a CCD is exposed to light, it generates and briefly stores light energy

Answer 16

false (stores, but does not generate)