MRI-guided adaptive radiotherapy for prostate cancer: When do we need to account for intra-fraction motion?

Abstract

A shift of the daily plan can mitigate target position changes that occur between daily MR acquisition and treatment for MR-linac radiotherapy, but increases the session time. We demonstrated that our workflow strategy and decision-making process, to determine whether a subsequent shift is necessary, is appropriate.

Keywords

• MR-Linac
• Radiotherapy
• Prostate cancer
• Adapt to shape
• Adapt to position