688 / 1031
REAL TIME PLANNING (US)
Different subvolumes of
interests are considered
CTV1:
Peripheral zone
(main tumour burden:
in yellow)
CTV2:
Macroscopic
tumour shown in red
CTV3
…..
CTV:
prostate capsule plus any EPE or seminal vesicle
involvement. CTV margins are constrained posteriorly to
the anterior rectal wall and superiorly to the bladder base.
PTV:
should be considered as a CTV expansion
accounting for uncertainties like catheter tracking and
image registration.