Appendix: Using The Limit Pattern To Judge Image Flaws; Preparation; Comparing The Flatfield With The Limit Pattern - AGFA CR Series Service Manual

DD+DIS155.11E
8

Appendix: Using the Limit Pattern to judge Image Flaws

The limit pattern shows the limit of acceptable image quality concerning stripes parallel
and vertical to the image plate run. It is available on the digitizer USB flash drive.
8.1

Preparation

(1) Create a flatfield image as described in chapter 3.6, "Adjustments and
Calibrations". Main steps:
- Check the image plate.
- Erase the cassette.
- Expose the image plate.
- Scan the image.
(2) Check the image.
8.2

Comparing the Flatfield with the Limit Pattern

(1) Switch off the digitizer.
(2) Remove the USB flash drive and insert it at the NX workstation.
(3) On the NX workstation select the Main Menu.
(4) Select <import images>.
(5) Browse to the USB flash drive to select the limit pattern
in directory \Limit Pattern.
(6) Wait until the image is imported (approx. 15 seconds).
(7) Select the examination menu.
(8) Visually compare the flatfield with the limit pattern.
(9) Evaluate as follows:

If the scanned image visually looks as good as or better than the limit pattern,
the image quality is okay.

If there are unacceptable effects see sections 6 and 7 of this document.
The controlled version of this document is available from the Agfa HealthCare Library. Any printed copy of this document is uncontrolled.
Edition 1, Revision 2
03-2013
DOCUMENT CONTROL NOTE:
CR 10-X / CR Reader / CR 12-X / CR Advanced Reader
Type 5151 / 100 / 110 / 200 / 210
Repair and Service
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