ArticleIn vivo (Athens, Greece)
Three-dimensional Patient-specific Quality Assurance Using Beam Delivery Log Data for Pencil Beam Scanning Carbon-ion Radiotherapy.
Article in In vivo (Athens, Greece). 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.
- A practical framework for routine verification of Spot Position Monitor coordinate consistency in scanned carbon-ion radiotherapy.Journal of applied clinical medical physics · 2026Article
- Beam commissioning of a new compact scanned proton therapy system with four different dose calculation algorithms.Journal of applied clinical medical physics · 2026Article
- Survey and profile data on particle therapy technology in Japan.Japanese journal of radiology · 2025Article
- Enhancing Patient-specific Quality Assurance in Carbon-ion Radiation Therapy: Recalculating Delivered Dose Distribution Using Log Data.In vivo (Athens, Greece)Article
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7 authors.
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No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND/
aimIn the pencil beam scanning carbon-ion radiotherapy, spot positions are arranged in three dimensions throughout the entire target region. Therefore, dose deviations can occur due to spot position errors in the target. However, performing three-dimensional measurements for routine patient-specific quality assurance (PSQA) is difficult because a simple measurement method has not been established. This study aimed to establish a three-dimensional dose verification method using beam delivery log data. MATERIALS AND
methodsPencil beam dose distributions in water were generated through Monte Carlo (MC) calculations. Treatment beam dose distribution was calculated by superposing the pencil beam dose distributions, considering given spot positions and monitor units (referred to as semi-MC, SMC). The aim of this study was to perform gamma analysis (GA) using dose distributions of log data-based SMC instead of measured dose for PSQA. To verify SMC, the SMC depth-dose curves were compared with the measured dose. To assess the equivalence between the proposed and measurement-based methods, pass rates of two-dimensional GA were compared. Furthermore, a three-dimensional GA was performed to investigate clinically suitable criteria.
resultsThe SMC dose curves were consistent with measured dose, with a deviation <5%. In two-dimensional GA, pass rates for the proposed method were generally lower than those for measurement-based method. The results of the three-dimensional GA indicated that the proposed method, with criteria of 3%-3 mm and 3%-2 mm, had capabilities comparable to the measurement-based method.
conclusionThe developed three-dimensional log data-based PSQA method with criteria of 3%-3 mm and 3%-2 mm is clinically applicable.
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