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IMRT for Prostate Cancer

PLANNING TARGET VOLUMES

Low and Intermediate Risk Patients:

GTVp

Prostate alone

GTVpb

Prostate and base of seminal vesicles

CTVpb

GTVpb+0.5cm (excluding rectum)

PTV74

GTVp + 0.5cm (excluding rectum)

PTV71

CTVpb + 0.5cm (isotropic)

High Risk Patients:

GTVp

Prostate alone +/- any involved disease

GTVpsv

Prostate and seminal vesicles

CTVpsv

GTVpsv+0.5cm (excluding rectum)

PTV74

GTVp+0.5cm (excluding rectum)

PTV71

CTVpsv+0.5cm (isotropic)