View Box Flashcards
1
Q
Has a direct effect on image contrast
A
Illuminators
2
Q
Bulbs from illuminators should be changed
A
Every 2 years
3
Q
Quality control test of illuminator should be done at least
A
Every year
4
Q
Amount of light emitted or scattered from a surface
A
Luminance
5
Q
Luminous intensity per unit of projected area of surface
A
Luminance
6
Q
Luminance can be measured in
A
Candles, candela/sqm, nit
7
Q
Standard luminance for radiography
A
1700 nit
158.18 cd/sqft
8
Q
Standard luminance for mammography
A
3500 nit
325.66 cd/sqft
9
Q
Luminance should not vary by
A
15%
10
Q
Leasure tge luminance of the different areas of the view box at ______
A
9 inches distance
11
Q
Measure tge ambient light _______ frim the illuminator
A
1 foot
12
Q
Ambient light in xray should be
A
320 lux
13
Q
Ambient light in mammography should be
A
50 lux
