GE Healthcare Brivo XR118 Service Manual page 153

GE H
EALTHCARE
D 5461425-8EN, R
IRECTION
PACS / Image Display Test Image
3.) Testing for an Equal Number of Bands
Note:
6
EVISION
The 12 bands on the left side each have a different brightness. The top six should appear
"dark" and the bottom six "bright".
Inside each band are five small squares with different intensities (like the 5% / 95% squares in
a SMPTE pattern). The squares provide a quantitative way to compare two images and report
how the PACS Test Images appear.
For the Additional Tests section below, record the following for each image:
a.) The number of distinct bright & dark bands (based on the band intensity)
b.) The number of squares visible in each band For example, if the ramp appears as:
Count bands with distinct gray levels, not simply the number of bands with visible
squares.
For example, if the ramp appears as:
Chapter 6 - - Calibration
B XR118 S M
RIVO ERVICE ANUAL
Page 153