1011 / 1363
Validation of sCT
03/01/13
*Typical values observed.
Dose difference
•
Percentage difference at prescription points,
isocentre or DVH points
0.3-2.5%
MAE
•
Voxel-wise mean difference in HU; Values sensitive
to inclusion of more soft-tissue or air
80-200 HU (brain) & 40 HU (prostate)
Overlap (DSC or MASD) in bone
•
Dice similarity coefficient or Mean Hausendorf
Distance
0.5 < DSC > 0.95
Gamma index
•
Displayed as a map; combined distance to
agreement and dose difference
2% & 2mm > 98%
*Edmund, J. M., & Nyholm, T.
(2017).