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8. Enter the measured CT Number value and click the Save button.
9. When CT Number Calibration is completed, open Reconstruction.vxm and recover the
parameter as shown below.
• POSTPROCESSING = 0 → POSTPROCESSING = -50
• UserCTNumCal = 0 → UserCTNumCal = 1
• UseArcCut= 0 → UseArcCut= 1
10. Capture the CT Number phantom and evaluate CT Number accuracy.
(refer to 5. CT Number Accuracy evaluation.)
※ CT Number standard value
Parameter LSL(Lower Specification Limit) USL(Upper Specification Limit)
Air -1030 -900
Water -20 20
Choose HD Tap and input CT Number value
measured at high resolution.
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