Dose bins
Volume
20%
20%
100%
50%
40%
50%
Approximation
dose voxel with small relative volumes excluded
min and max doses to ROI may differ in DVH and dose
distribution
use “near minimum”
D
2%
and “near maximum”
D
98%
dose
Dose statistic Calculations - DVH
PTV
Differential DVH for PTV




