Service Manual
Fire
CR
+
Computed Radiography Scanner
36
Troubleshooting |
Fire
CR
+
Artifacts (cont.)
Symptom
Cause
Solution
Image is extremely
dark
This issue is usually caused by an
excessive overexposure of the IP or
improper window/level settings for the
image
Start by adjusting the
window/level settings for the
image, assisted by the histogram
in the QA menu. If large parts of
the image have been burnt away,
the image has most likely been
overexposed. An overexposure
can be determined by an
exposure index at 2500 or higher.
Noisy Images
There are two main causes of noise:
1.
Image artifacts related to a Mainboard and PMT
2.
The noisy artifacts in the mainboard is that both image and noisy artifacts displays on
the screen so that user can recognize both image and noisy on the image. This Noisy
artifacts is not in high noise but it can reduce the image quality.
Replacing the main board usually fixes image artifacts but please contact 3DISC Technical
Support so that we will help you to find out the solution.
Figure 1
. Example of noise in a Blank image (cal0)
Figure 2
. Example of wave noise
