Brain 17 Vienna
Metric
calculation
conformity index (RTOG)
rCI V Rx
/ V PTV
conformity index (Paddick)
pCI V 2
/ V PTV
x V Rx
PTV,Rx
homogeneity index
HI
D max
/ D Rx
gradient index / V 100% volumes of normal tissue (brain/ROIs) irradiated to Dx planning time, treatment time etc. GI V 50%
Metrics for high precision RT
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