Target Volume Determination 2015

CT

Benign Hyperplasia

• T-Staging: Detection – T 1 – not palpable not detectable – T 2 – confined to prostate not detectable – T 3/4 – extracapsular extension: infiltration of seminal vesicles, neurovascular bundle, rectum, bladder difficult • Grading: not possible ➡ CT not the method of choice

MRI

• Origin in central gland • Elevation of bladder • Protrusion of middle lobe • Confined within capsule

T2a T2b T2c (<50% 1 lobe) (>50% 1 lobe) (both lobes) Prostate Carcinoma

Prostate Carcinoma T3b extracapsular extension + infiltration of seminal vesicles

Extracapsular Extension

Hricak H, Cancer 2004