1674 / 1840
Quality Parameters and Indices
The Dose Volume Histogram: The Differential DVH
It is the frequency distribution of dose in a VOI (Target or OAR)
For each bin e.g. [100, 103]%
= [11,50 - 11,85] Gy
it is the volume of the VOI
(Target or OAR) in mm³ or
cm³ or % of the VOI
Target
Dose Interval divided in “bins”
in cGy or Gy or %
receiving a dose value
within that bin
A narrow peak indicates homogeneity!