IMRT 2018

3D vs IMRT: PTV

HOMOGENEITY INDEX by RTOG: Mean Dose/Presc Dose

HI95: D5-D95/dose mean (Palma IJROBP 2008)

Murshed IJROBP 2004

41 pts Stage IIIA-IIIB PTV: 623cc (75-1645) Upper location 10 pts Stage I-IIIB PTV: 403 (65- 762)

Homogeneity Index 3D vs IMRT: 1.16 vs 1.12 (p<0.01) (

Liu IJROBP 2004