Checking For Image Problems - Siemens FUJI-Reader CR-IR347 Service Manual

9.3

Checking for Image Problems

I Check for Nonuniformity, Sensitivity, and Density
(1) Expose two IPs of all sizes found at the institution (both ST and HR types). Expose the
first in the normal direction, and the second in a 180-degree rotated orientation.
The IP exposure conditions are as follows.
❍ ST
• Dose:
• X-ray tube target :
• Distance:
• Voltage:
• Current:
• Time:
❍ HR
• Dose:
• X-ray tube target/filter: Molybdenum/molybdenum
• Distance:
• Voltage:
• Current:
• Time:
(2) Using the test menu, record and output an image.
❍ ST
"
❍ HR
"
(for versions other than Japanese and U.S.)
(3) Check to ensure that there is no nonuniformity on the output film or the image on the
image monitor .
N CHECK N
Check for nonuniformity.
If any nonuniformity is found, refer to "10. Troubleshooting Procedures Based on
Abnormal Image" in the "Troubleshooting" volume.
009-058-03
08.30.2002 FM3476
1 mR
Tungsten
1.8 m
80 kV
50 mA
0.013 sec
20 mR
0.55 m
28 kV
100 mA
0.053 sec
" (for Japanese version)/"SENSITIVITY" (for versions other than Japanese)
" (for Japanese version)/"SensitivityHQ" (for U.S. version)/"SENSITIVITY2"
CR-IR347 Service Manual
MC - 258
MC - 258