Basic Treatment Planning

Positional variations

Organs and tumours in the pelvis region moves mainly due to changes in the digestive system and filling of bladder and rectum from day-to-day. Example: prostate, bladder, rectum, cervix.

IGRT and margin determination: Pelvic treatment (Tuesday)

Mainly inter-fraction positional variation

Typical values (1 SD) are 3 - 5 mm.