8-6
20. Zoom Line Pair image (top-
left). To zoom, start at the upper
right corner of image and hold
down left mouse button and drag
cursor across the image.
21. Right click the image and select
Set Filter > Hard.
22. Adjust Brightness and Contrast
level for the best image quality.
Evaluate the image.
Line Pair - Line Pairs consists
of a resolution of 10 lines per cm
(5 dark with 5 light). Line Pairs
12 through 18 are displayed in
the image.
The picture depicts expected
appearance of the Line Pairs
per cm present within the QA
Phantom.
23. Verify that definition is present
within line pairs 12, 13, and 14.
Compare image quality to the
image shown at right.
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