ArticleJournal of applied clinical medical physics2021
Four-dimensional dose calculations for dynamic tumour tracking with a gimbal-mounted linear accelerator.
Article in Journal of applied clinical medical physics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 4 citations in OpenAlex.
- Article
- Four-dimensional treatment planning strategies for dynamic tumor tracking.Journal of applied clinical medical physics · 2024Article
- In-vivo quality assurance of dynamic tumor tracking (DTT) for liver SABR using EPID images.Journal of applied clinical medical physics · 2023Article
- Monte Carlo Modeling of Dynamic Tumor Tracking on a Gimbaled Linear Accelerator.Journal of medical physicsArticle
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeIn this study we present a novel method for re-calculating a treatment plan on different respiratory phases by accurately modeling the panning and tilting beam motion during DTT (the "rotation method"). This method is used to re-calculate the dose distribution of a plan on multiple breathing phases to accurately assess the dosimetry.
methodssIMRT plans were optimized on a breath hold computed tomography (CT) image taken at exhale (BH
resultsIn total, 26 OARs were examined from 10 patients. When the dose was calculated on the inhale and exhale phases six OARs exceeded their dose limit, and when all 10 phases were used five OARs exceeded their limit.
conclusionDynamic tumor tracking plans optimized for a single respiratory phase leave an OAR vulnerable to exceeding its dose constraint during other respiratory phases. The rotation method accurately models the beam's geometry. Using deformable image registration to accumulate dose from all 10 breathing phases provides the most accurate results, however it is a time consuming procedure. Accumulating the dose from two extreme breathing phases (exhale and inhale) and weighting them properly provides accurate results while requiring less time. This approach should be used to confirm the safety of a DTT treatment plan prior to delivery.
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