ArticleInternational journal of particle therapy2026
Commissioning of LUNA three-dimensional surface-guided radiotherapy in full rotating gantry proton therapy system.
Article in International journal of particle therapy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Commissioning and clinical positioning assessment of a novel surface-guided radiation therapy (SGRT) system at a C-Arm linear accelerator.Journal of applied clinical medical physics · 2026Article
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12 authors.
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Abstract
Background: Surface-guided radiotherapy (SGRT) is a real-time, non-ionizing optical imaging technology that monitors patient surfaces during radiation treatment by creating 3D reconstructions from surface coordinate measurements. LAP has recently released a new SGRT solution, and we are the first proton therapy center to adopt this SGRT solution in a full rotating gantry. This work aims to present the commissioning results and quality assurance procedures at our center and to highlight the challenges of installing SGRT on a full rotating gantry. Methods: Following closely the recommendations in TG-302, 6 different measurements were performed during the commissioning of the SGRT system, which was mounted linearly on the same beam due to space constraints. These measurements included spatial drift measurement, static localization accuracy, dynamic localization accuracy, end-to-end localization accuracy, field-of-view (FOV) characterization of different treatment sites, and stability upon gantry rotation. These measurements subsequently served as baseline values for the different quality assurance procedures recommended in TG-302. Results: The moving average for spatial drift measurement across 200 minutes was 0.0233 mm, while the average deviation for static and dynamic localization was less than 0.2 mm across. The largest deviation was 0.182 mm in the LR direction at 40 mm for static localization, while dynamic localization has a maximum deviation from the Anzai laser tracking at 0.1 minute point with a value of 0.734 mm. End-to-end localization test reported a difference of 0.08 cm between x-ray imaging and LUNA 3D's isocenter. The FOV was in general mostly visible for all treatment sites except for the lower neck region and lateral prostate surfaces due to the placement of the cameras. Stability during gantry rotation is kept within 0.2 mm with gantry angle 30.4° and 335.8° having the largest magnitude deviations of 0.151 and 0.156 mm, respectively. Conclusion: The successful commissioning of the LUNA 3D SGRT system at our center can serve as a reference for other particle therapy centers with a full rotating gantry. This work will allow them to include the relevant tests as well as understand the limitations of FOV for different treatment sites when adopting similar camera arrangement like ours in a full rotating gantry.
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