Hologic Faxitron CT, Руководство пользователя

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FAXITRON CT USER MANUAL | HOLOGIC | REVISION 002
SECTION
Schedule of
Maintenance
8
8-6
Repeat the test in 3D mode, with the wax phantom insert lying flat on the foam. This time all 4
masses, fibres and groups of calcs must be clearly visible in the slice view (MIP) and 3D
rendered view, as shown below.
ACCEPTANCE REQUIREMENTS
1. Configure the system to take an image of the wax insert of the Mini ACR Phantom in
2D mode.
2. Make sure that the Phantom is clean and free of debris.
3. Stand the wax insert on its side facing the centre of the X-Ray beam without using any
attenuator blocks.
4. Still in 2D mode start X-Rays and wait for all processing to be completed and the
image to be displayed.
5. Adjust contrast and brightness levels as needed for the best image.
6. Once the image is corrected, the brightest 3 objects of each type must be visible.
7. Lay the wax phantom flat on the foam and repeat image acquisition using 3D mode.
8. In 3D mode all groups of objects must be clearly visible. Switch the slice view to MIP
to make it easier to see all the objects on one plane.
9. Record results on the Periodic Maintenance Record.
8.8.0 Cont.
Figure 8.8.2
Typical X-ray image of mini
ACR Phantom (wax insert
only) in 3D mode
Figure 8.8.3
Close up view of wax insert
shows all groups visible.