Dose 2016

GTV, Gross Tumor Volume CTV, Clinical Target Volume ITV, Internal Target Volume PTV, Planning Target Volume

•

•

•

•

OAR, Organ At Risk

•

• PRV, Planning organ-at-Risk Volume

TV, Treated Volume

•

GTV, CTV, and OAR are purely oncological/anatomical concepts which delineation is independent of treatment technique.

ITV, PTV, and PRV are treatment planning (margin) dependent concepts

TV is treatment dependent concept