test 1 review Flashcards

1
Q

what is the customary equivalent for Gray?

A

RAD

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2
Q

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

A

REM and Sievert

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3
Q

list of customary units

A

Roentgen, RAD, REM, Curie

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4
Q

list of SI units

A

Air kerma, Gray, Sievert, Becquerel

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5
Q

convert 0.1 Gy to mGy

A

100 mGy

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6
Q

the SI equivalent of 300 REM is ______

A

3 Sv

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7
Q

This man invented the fluoroscope in 1896

A

Thomas Edison

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8
Q

the light emitted by the input phosphor is

A

directly proportional to the number of x-rays received

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9
Q

the function of image intensifier __________________

A

increase image brightness

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10
Q

flux gain x minification gain = ____________-

A

brightness gain

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11
Q

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

A

automatic brightness control

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12
Q

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

A

true

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13
Q

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

A

output phosphor

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14
Q

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

A

pincushion appearance

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15
Q

digital fluoroscopy is improved by using _______

A

a CCD

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16
Q

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

A

false (stores, but does not generate)