ArticleRadiation oncology (London, England)2018
Optimal collimator rotation based on the outline of multiple brain targets in VMAT.
Article in Radiation oncology (London, England), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Automated decision support tool for static angle modulated ports configuration in VMAT with dynamic collimator rotation for head and neck cancer.Journal of applied clinical medical physics · 2026Article
- The feasibility of using coplanar-only VMAT combined with "Treat" function to replace non-coplanar VMAT for SRS of 2 to 6 brain metastases.Quantitative imaging in medicine and surgery · 2025Article
- Optimization of sub-arc collimator angles in volumetric modulated arc therapy: a heatmap-based blocking index approach for multiple brain metastases.Physical and engineering sciences in medicine · 2024Article
- Sub-arc collimator angle optimization based on the conformity index heatmap for VMAT planning of multiple brain metastases SRS treatments.Frontiers in oncology · 2022Article
- Optimization of collimator angles in dual-arc volumetric modulated arc therapy planning for whole-brain radiotherapy with hippocampus and inner ear sparing.Scientific reports · 2021Article
- A Collimator Setting Optimization Algorithm for Dual-Arc Volumetric Modulated Arc Therapy in Pancreas Stereotactic Body Radiation Therapy.Technology in cancer research & treatment · 2019Article
- Overcoming Problems Caused by Offset Distance of Multiple Targets in Single-isocenter Volumetric Modulated Arc Therapy Planning for Stereotactic Radiosurgery.Journal of medical physicsArticle
- Effect of Multi-Leaf Collimator Angle Optimization on the Planning Parameters in Intensity-Modulated Radiotherapy for Thoracic Tumors.Technology in cancer research & treatmentArticle
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5 authors.
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Abstract
backgroundThe aim of this study was to investigate the dosimetric quality in volumetric modulated arc therapy (VMAT) plans with optimal collimator angles that can represent the outline of multiple brain targets.
methodsTwenty patients with multiple target volumes in the brain cases were selected retrospectively. To better represent the outline of the multiple brain targets, four conformal arc plans were generated for each patient using one full arc with four collimator settings. The optimal collimator angles calculated from the integrated multi-leaf collimator (MLC) aperture that had the smallest aperture size for certain collimator settings of the conformal arc plan were selected. VMAT plans with the optimal collimator angles with angular sections of 40° and 60° (Colli-VMAT (40°), Colli-VMAT (60°)) were generated, followed by evaluation of field sizes, dose-volumetric parameters and total monitor units (MUs).
resultsPatient-averaged values of field sizes for Colli-VMAT (40°) (111.5 cm
conclusionsThe Colli-VMAT plans with smaller angular sections could be suitable in the clinic for multiple brain targets as well as for irregularly shaped targets. Determination of the optimal collimator rotation generally showed good normal tissue sparing and MU reduction for multiple brain targets.
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