ArticleJournal of applied clinical medical physics2023
Development of a log file analysis tool for proton patient QA, system performance tracking, and delivered dose reconstruction.
Article in Journal of applied clinical medical physics, 2023. 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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8 citing papers in PubMed.
- Vision and implementation for the first U.S. carbon ion therapy center part II: Design philosophy and clinical implementation.Journal of applied clinical medical physics · 2026Review
- A feasibility study on a machine-learning-based quality assurance tool for spot-scanning proton therapy using delivery log files and treatment plans.Physics and imaging in radiation oncology · 2026Article
- Survey and profile data on particle therapy technology in Japan.Japanese journal of radiology · 2025Article
- Current status and upcoming developments for online adaptive proton therapy enabling a closed feedback loop for near real-time adaptation.Frontiers in oncology · 2025Review
- Development of a three-dimensional scintillation detector for pencil beam verification in proton therapy patient-specific quality assurance.Medical physics · 2024Article
- Article
- Patient-specific quality assurance of dynamically-collimated proton therapy treatment plans.Medical physics · 2024Article
- Development of a log file analysis tool for proton patient QA, system performance tracking, and delivered dose reconstruction.Journal of applied clinical medical physics · 2023Article
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5 authors.
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Abstract
PURPOSE/OBJECTIVE(S): To describe a log file-based patient-specific quality assurance (QA) method and develop an in-house tool for system performance tracking and dose reconstruction in pencil-beam scanning proton therapy that can be used for pre-treatment plan review. MATERIALS/
methodsThe software extracts beam-specific information from the treatment delivery log file and automatically compares the monitor units (MU), lateral position, and size of each spot against the intended values in the treatment plan to identify any discrepancies in the beam delivery. The software has been used to analyze 992 patients, 2004 plans, 4865 fields, and more than 32 million proton spots from 2016 to 2021. The composite doses of 10 craniospinal irradiation (CSI) plans were reconstructed based on the delivered spots and compared with the original plans as an offline plan review method.
resultsOver the course of 6 years, the proton delivery system has proved stable in delivering patient QA fields with proton energies of 69.4-221.3 MeV and an MU range of 0.003-1.473 MU per spot. The planned mean and standard deviation (SD) of the energy and spot MU were 114.4 ± 26.4 MeV and 0.010 ± 0.009 MU, respectively. The mean and SD of the differences in MU and position between the delivered and planned spots were 9.56 × 10
conclusionA tool has been developed to extract crucial information about the performance of the proton delivery and monitor system and provide a dose reconstruction based on delivered spots for quality improvement. Each patient's plan was verified before treatment to ensure accurate and safe delivery within the delivery tolerance of the machine.
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