Canon CXDI-1, Operation Manual

Page: 81 / 170

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7. Processing the Image (QA Mode Screen)
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7.4.2 REX ADJUST.
Use of the same REX (Reached EXposure index) will cause the density of the image to change
with the X-ray dose, as in conventional film/screen systems.
1
Select REX ADJUST.
Touch
[AUTO ADJUST.]/[REX ADJUST.]
and select
[REX ADJUST.]
.
2
Select the characteristic gray scale curve.
Touch to open the window and select the gray scale curve.
Table 7.4.2: Gray scale Curves and Their Characteristics
Name Features
CHEST
This is an S-shape curve for examining the chest.
LINEAR
This is a linear lookup table.
INV. LINEAR
This lookup table reverses the image density.
STAN. CONTRAST
This is a standard S-shape curve. It is usually used for
examining bones.
BONE #1
While maintaining contrast in a low density area, soft tissue
can be observed in the high density area.