From: Effect of intrafraction adaptation on PTV margins for MRI guided online adaptive radiotherapy for rectal cancer
Median overlapping volume (IQR)
Overlapping bowel with PTVmeso without 2nd adaptations
35.3 (25.2–52.4) cm3
Overlapping bowel with minimum PTVmeso after 2nd adaptations
19.3(12.6–34.7) cm3