Flipping Book

Be careful when evaluating D

max

and

min

from DVH statistics



each ROI contains of a number of dose

voxels



the dose is constant within a voxel

(center point)



the relative ROI volume in each dose

voxel gives the dose value from the

center point

Dose voxels

Principle of calculation of Dose Volume Histograms

Trade off between

calculation time

and dose

accuracy

PTV