Faculty, Staff and Student Publications

Language

English

Publication Date

1-1-2026

Journal

Physics and Imaging in Radiation Oncology

DOI

10.1016/j.phro.2025.100899

PMID

41541572

PMCID

PMC12800476

PubMedCentral® Posted Date

12-21-2025

PubMedCentral® Full Text Version

Post-print

Abstract

Compression belts (CBs) are sometimes used to reduce respiratory motion during stereotactic body radiotherapy of abdominal cancers with magnetic resonance (MR)-guided online adaptive planning. This study evaluated the dosimetric effects of overriding the relative electron density (ED) value of CBs in creating synthetic computed tomography (CT) scans for MR-guided adaptive planning. We evaluated plans for 12 patients with abdominal cancer and identified that ED values between 0.2 and 0.3 achieved the best approximation of CB ED in dose calculation. Our study presented an approach to estimate appropriate ED overrides for CBs in MR-guided online adaptive planning.

Keywords

MR-guided adaptive radiotherapy, Synthetic CT, Abdominal compression, Electron density override

Published Open-Access

yes

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