Contrast and Density

As kilovoltage (photon energy) is increased, the number of grays_______, thereby producing a longer scale of contrast.

increases
as screen speed increases, so does contrast (resulting in a ____ scale of contrast).

shorter
An increase in mAs is frequently accompanied by an appropriate decrease in kilovoltage, which would also _____ the contrast scale.

shorten
As distance from the radiation source ____, exposure rate decreases, and radiographic density _____

increases

decreases

Author

McCrae

305160

Card Set

Contrast and Density

Description

Registry

Updated

2015-07-14T00:46:07Z

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