![Show Menu](styles/mobile-menu.png)
![Page Background](./../common/page-substrates/page1018.jpg)
Established need for radiotherapy image guidance
and adaptation (pelvic tumours)
Presumed empty bladder on two
different occasions
Influence of rectal filling
Conventional population
based margin
isotropic 1.5-3cm
~40% fractions incur
geographical miss