Vatech A9 (PHT-30CSS)
Technical manual
VDH-TeM-098
107 / 214
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6.
High Contrast Resolution evaluation
6.1. High Contrast Resolution standards
Parameter
LSL (Lower Specification Limit)
USL (Upper Specification Limit)
High Contrast Resolution
-
1.0 mm
6.2. Phantom Specification
S&C Phantom
6.3. Test Method
1. Put the Phantom jig on the unit and make the phantom jig level by using bubble level and three
align pins.
2. Put the S&C Phantom on the phantom jig.
3. Run the Console Software and click the CBCT button to go into CBCT mode.
4. Choose the FOV 8x8/Adult/Normal/High Resolution/Standard as the image option and click the
Confirm button.
5. Press the Ready button and acquire an image.
6. When the reconstruction is completed, save the CT folder name in the
C:\VCaptureSW\ImageOutput folder as CT_S&C Phantom.
7. Open the saved image through 3D Viewer.
8. Go to the Axial view in full-screen mode and adjust the brightness and contrast of the image.
9. Make sure that you can see the minimum size of Air hole and PE(PolyEthylene) cylinder at the
distance of 50 cm(20 inches) from the monitor.