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4)
Fine adjustment
4-1) As the step (3)-3) above, make the system "READY" by selecting the exposure mode
"SMPTE" on the exposure screen. [Fig. 4]
4-2) On the X-ray generator press the exposure button. After the exposure, adjust the trim
so that the gray scale may be located in the center of the image. [Fig. 5]
• For correct density measurement of the 32-step chart, the gray scale must be printed
in the center of an image to eliminate the shading feature.
* Data may not form a straight line near the minimum and maximum densities due to
characteristics of the printer. Rotate the image 90 degrees on the QA screen, and
reprint or retake measurements.
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[Fig. 4]
[Fig. 5]
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