ArticlePhysical and engineering sciences in medicine2026
Bridging precision and practice: dual validation of a high-resolution detector array for beam profiling and patient QA in robotic radiosurgery.
Article in Physical and engineering sciences in medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study assessed a high-resolution ionisation chamber-based PTW 1600SRS detector array (array) for beam profile analysis and patient-specific quality assurance (PSQA) in CyberKnife (CK) stereotactic radiosurgery (SRS) and stereotactic body radiotherapy (SBRT). The goal was to determine its suitability for small fields and non-isocentric delivery, which is unique to robotic platforms. Detector performance was examined for dose linearity, reproducibility, beam profiles, output factors, dose-rate dependence, and verification of the Iris collimator field size. Results were benchmarked against diode-based commissioning data. Clinical applicability was tested by retrospectively verifying 20 intracranial SRS and 20 extracranial SBRT plans using gamma analysis with criteria ranging from 3%/3 mm to 1%/1 mm, as well as 4%/1 mm. The detector showed strong dose linearity (R
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