ArticleJournal of applied clinical medical physics2025
Fast and accurate measurement of small field dosimetry using a novel scintillation detector.
Article in Journal of applied clinical medical physics, 2025. 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.
- Fast and accurate measurement of small field dosimetry using a novel scintillation detector.Journal of applied clinical medical physics · 2025Article
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4 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundThe most used instruments for small-field dosimetry have notable limitations, including the need for correction of output factors, limited scanning speeds, and challenges in alignment for percentage depth dose (PDD) measurements, particularly for extremely small fields. However, plastic scintillation detectors (PSDs) are an attractive alternative for small-field dosimetry due to their correction-free nature, linear dose response, and fast response time. PURPOSE: This study evaluates the robustness and accuracy of the dosimetric measurements using a new water-equivalent PSD in small-field dosimetry. The study also aims to report accurate measurements of output factors, profiles, and an indirect method for measuring PDD in small fields, with a scanning time that is 5 to 10 times faster than traditional methods.
methodPDDs, profiles, and output factors were measured on a Varian TrueBeam 6XFFF photon beam for the field sizes of 0.5 × 0.5 cm
resultThe BP-PSD demonstrated excellent agreement with other detectors for small-field output factors (FOFs), with a maximum variation of 1.6%. The BP-PSD also showed strong agreement in PDD measurements with an ion chamber (TN31013) for both 3 × 3 cm
conclusionThe BP-PSD has proven to be a robust and reliable detector for small-field dosimetry. It shows excellent agreement with other detectors in measuring small FOFs, profiles, and PDDs, while achieving significantly faster scanning speeds in a water tank.
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