EBRO 2017

Tra

PTV = prostate + entire seminal vesicles + a 1-cm margin except posteriorly, where a 0.6-cm margin was used

“…PTV regions receiving less than the prescription routinely included the prostate e rectal interface (to adhere to our rectal dose e volume constraints) and occasionally the superior portion of the seminal vesicles to adequately spare small bowel….”

Zelefsky M et al, IJROBP 2012; 84 (1): 125-129