ESTRO course on Image Guided Radiotherapy in Clinical Practice 2018

Results: Evaluation of plan selection

Delayed treatment: 7 x (5 x in 1 patient)

To obtain a more favorable anatomy in case of a very full rectum, usually caused by gas pockets

Post-treatment CBCT 1pw:

1 fraction the selected plan was no longer suitable due to a moving gas pocket

The weekly review:

Smaller margin could have been selected in 20% of fractions, and a larger margin in 2% of fractions No inconsistencies between the imaging system and radiotherapy management system!

ESTRO IG and Adaptive Course Parikh Budapest 2018

Slides courtesy of R de Jong