Table 1 Definition of target volumes
Target volumes | CTV definition | PTV definition |
|---|---|---|
PTV-1 | Prostate and seminal vesicles | + 10 mm uniform margin, 7 mm to posterior |
PTV-2 | Prostate and base seminal vesicles | + 5 mm uniform margin, no overlap with rectum |
PTV-LAG | Obturator, peri-rectal, internal iliac, proximal external iliac, common iliac lymph nodes up to L5/S1 | + 10 mm margin around large pelvic vessels |