Journal article

On the reduction of aperture complexity in kidney SABR

Mathieu Gaudreault, Keith Offer, Tomas Kron, Shankar Siva, Nicholas Hardcastle

JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS | WILEY | Published : 2021

Abstract

BACKGROUND: Stereotactic ablative body radiotherapy (SABR) of primary kidney cancers is confounded by motion. There is a risk of interplay effect if the dose is delivered using volumetric modulated arc therapy (VMAT) and flattening filter-free (FFF) dose rates due to target and linac motion. This study aims to provide an efficient way to generate plans with minimal aperture complexity. METHODS: In this retrospective study, 62 patients who received kidney SABR were reviewed. For each patient, two plans were created using internal target volume based motion management, on the average intensity projection of a four-dimensional CT. In the first plan, optimization was performed using a knowledge-..

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