A margin recipe for the management of intra-fraction target motion in radiotherapy

ABSTRACT: Highlights • We determined how motion management strategies influence treatment margins.• A simple recipe was found to determine the margin when intrafraction motion is constrained.• For a continuous drift, the margin was well approximated by assuming the target is at ¾ of the drift.• Our analysis can be used to study the benefit of different motion management strategies.

Background and purpose

Strategies to limit the impact of intra-fraction motion during treatment are common in radiotherapy. Margin recipes, however, are not designed to incorporate these strategies. This work aimed to provide a framework to determine how motion management strategies influence treatment margins.

Materials and methods

Two models of intra-fraction motion were considered. In model 1 motion w

SUBMITTER: Janssen T 

PROVIDER: S-EPMC9682358 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature