GE Healthcare Brivo XR118, Руководство по обслуживанию

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GE H
EALTHCARE
D
IRECTION
5461425-8EN, R
EVISION
6 B
RIVO
XR118 S
ERVICE
M
ANUAL
Chapter 7 - - Brivo XR118 System Check Page 161
Chapter 7 - Brivo XR118 System Check
Section 1.0
Image Quality Test
1.) Go to SUIF according to the instruction described above. Then press the “Image Quality”
button on the SUIF.
2.) Then press “Image control tools” to do the QAP. There will be the detail instruction on the
screen for each step. The system will tell operator the pass or failed.
3.) Wait until the test result displayed.
Make sure all the items pass the test.
Section 2.0
Image Artifact Check (Optional)
Please follow below steps to check if there any image artifact may impact clinical diagnostics.
1.) Set exposure mode and technique as: Digital cassette receptor; SF; 80kV; 100mA; Detector
position, SID and FOV same as Digital cassette calibration setup.
2.) Set exposure time to 5ms, and take exposure. After exposure is done, view Raw Image to
adjust contrast to 98% and set brightness to visible level. Zoom the image to 1, pan cross the
whole image to observe the image to make sure there is not any visible artifact.
3.) Set exposure time to 32ms, and take exposure. After exposure is done, view Raw Image to
adjust contrast to 98% and set brightness to visible level. Zoom the image to 1, pan cross the
whole image to observe the image to make sure there is not any visible artifact.
4.) Set exposure time to 80ms, and take exposure. After exposure is done, view Raw Image to
adjust contrast to 98% and set brightness to visible level. Zoom the image to 1, pan cross the
whole image to observe the image to make sure there is not any visible artifact.
This can be passed if detector calibration is OK. Otherwise, it needs to redo detector
calibration or mark the bad line.
Section 3.0
Uniformity Check
If the image quality is not good, then follow the below steps to check if there any uniformity
issue caused by the table top or wall stand front panel.
1.) Set exposure techniques as: SID 150cm; 100kV; 1mAs.
2.) Take exposure 5 times for each exposure mode (Detector under the table and above the
table).
3.) After exposures done, view Raw Image with cobb tool at same location to compare the
average value.
4.) Set exposure techniques as: SID 150cm; 80kV; 3.2mAs.
5.) Take exposure 5 times for each exposure mode (Detector under the table and above the
table).
6.) After exposures done, view Raw Image with cobb tool at same location to compare the
average value.