ArticleJournal of applied clinical medical physics2024
Repurposing DailyQA3 for an efficient and spot position sensitive daily quality assurance tool for proton therapy.
Article in Journal of applied clinical medical physics, 2024. 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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1 citing paper in PubMed.
- Repurposing DailyQA3 for an efficient and spot position sensitive daily quality assurance tool for proton therapy.Journal of applied clinical medical physics · 2024Article
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11 authors.
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No grant is acknowledged in the PubMed record.
Abstract
introductionDaily quality assurance is an integral part of a radiotherapy workflow to ensure the dose is delivered safely and accurately to the patient. It is performed before the first treatment of the day and needs to be time and cost efficient for a multiple gantries proton center. In this study, we introduced an efficient method to perform QA for output constancy, range verification, spot positioning accuracy and imaging and proton beam isocenter coincidence with DailyQA3.
methodsA stepped acrylic block of specific dimensions is fabricated and placed on top of the DailyQA3 device. Treatment plans comprising of two different spread-out Bragg peaks and five individual spots of 1.0 MU each are designed to be delivered to the device. A mathematical framework to measure the 2D distance between the detectors and individual spot is introduced and play an important role in realizing the spot positioning and centering QA. Lastly, a 5 months trends of the QA for two gantries are presented.
resultsThe outputs are monitored by two ion chambers in the DailyQA3 and a tolerance of
conclusionWith the proposed approach, we can perform four QA items in the TG224 within 10 min.
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