Siemens SOMATOM Emotion syngo CT 2007E - Page 534

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syngo CT 2007E Emotion Operator Manual
02/2008 0.0
Constancy Test of the Monitor Quality Assurance
F.7-8
Testing the homogeneity of the
image brightness
F.7
This test ascertains any deviations in the luminance (L) within
the image.
F.7
✧ Select test image 3.
✧ With the luminance meter measure a point close to the
center (L
center
) and four measuring points in the corners
(L
corner
).
Maximum deviation of the corner points:
F.7
Flatscreen ± 20% (max.) F.7
Calculation of the deviation in % = 100 x (L
center
- L
corner
) /
L
center
F.7
fB .7 F
Visual interference such as ghosting, artifacts, overshoots, light
or dark spots, flickering etc. encountered.
F.7
✧ Please consult your service technician.
F.7