Lower GI 2017

First page Table of contents Previous page 665 Next page Last page

Adaptive RT: T regression as seen by MRI

Planning MRI_GTV: 28cc

- Evidence of large T regression in most pts, already during the first half of the treatment - T2-weighted MRI suitable for assessing tumour regression and GTV/CTV contouring - Defining GTV_boost as the fraction of rectum corresponding to visible tumor at half-RT MRI

Mid-therapy (fr 9) MRI_GTV: 7cc

- Dose/fractionation ?

- Margins ?

Made with