Brightness Flashcards
1
Q
what is brightness?
A
measurement of luminescence of a monitor
2
Q
what unit is brightness calibrated in?
A
candela (cd) per square meter
3
Q
what is brightness manipulated by?
A
window level
4
Q
what is window level?
A
the center of the window width
5
Q
what 3 things control brightness?
A
Histograms
LUT’s
algorithms
6
Q
if you increase window level, what happens to brightness?
A
brightness decreases
7
Q
what is brightness the exact opposite of?
A
density
8
Q
are window level and brightness directly or inversely related?
A
inversely
9
Q
what do we think of mAs as in Digital Imaging?
A
data
10
Q
when mAs of kVp is increased, what happens to brightness?
A
brightness is not affected
