Planning Target Volume margin assessment for online adaptive MR-guided dose-escalation in rectal cancer on a 1.5T MR-Linac

CONCLUSION: The shorter the treatment time, the smaller the margins needed to cover for the GTV movement during an online adaptive MRgRT dose-escalation strategy for intermediate risk rectal cancer. When time intervals between replanning and the end of dose delivery could be reduced to 15 minutes, a 4 mm margin would allow adequate target coverage.PMID:34280404 | DOI:10.1016/j.radonc.2021.07.011
Source: Radiotherapy and Oncology : journal of the European Society for Therapeutic Radiology and Oncology - Category: Radiology Authors: Source Type: research