Target Volume Determination 2015

CNS case

• Example of plan for GBM patient

• IMRT technique • Dose to match conformal 2 phase approach

• 1 phase integrated approach • Outer PTV - 54 Gy/30# (≈ Phase 1 – 50 Gy/25#) • Inner PTV - 60 Gy/30# ( ≈ Phase 2 – 10 Gy/ 5#)