ArticleMedical physics2020
Small field output correction factors of the microSilicon detector and a deeper understanding of their origin by quantifying perturbation factors.
Article in Medical physics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed.
- Performance evaluation of a new type of commercial silicon detectors for photon beam dosimetry.Journal of applied clinical medical physics · 2026Article
- Field output correction factors and perturbation factor analysis for novel SunSILICON and SunSILICON P silicon diode detectors.Journal of applied clinical medical physics · 2026Article
- Clinical evaluation of two new unshielded and shielded silicon diode detectors in external photon beam radiation therapy: SunSILICON and SunSILICON P.Journal of applied clinical medical physics · 2026Article
- Measurement of Percentage Depth-Dose Distributions in Clinical Dosimetry: Conventional Techniques and Emerging Sensor Technologies.Sensors (Basel, Switzerland) · 2026Review
- Fast and accurate measurement of small field dosimetry using a novel scintillation detector.Journal of applied clinical medical physics · 2025Article
- Experimental and Monte Carlo based dosimetric investigation of a novel 3 mm radiosurgery 3 MV beam using the microSilicon detector.Journal of applied clinical medical physics · 2024Article
- MR compatible detectors assessment for a 0.35 T MR-linac commissioning.Radiation oncology (London, England) · 2024Article
- Characteristics of a plastic scintillation detector in photon beam dosimetry.Journal of applied clinical medical physics · 2024Article
- Determination of the dose rate around a HDRZeitschrift fur medizinische Physik · 2023Review
- Monte Carlo modelling and validation of the elekta synergy medical linear accelerator equipped with radiosurgical cones.Heliyon · 2023Article
- A multi-institutional evaluation of small field output factor determination following the recommendations of IAEA/AAPM TRS-483.Medical physics · 2022Article
- Determination of correction factors in small MLC-defined fields for the Razor and microSilicon diode detectors and evaluation of the suitability of the IAEA TRS-483 protocol for multiple detectors.Journal of applied clinical medical physics · 2022Article
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7 authors.
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Abstract
purposeThe aim of this study is the experimental and Monte Carlo-based determination of small field correction factors for the unshielded silicon detector microSilicon for a standard linear accelerator as well as the Cyberknife System. In addition, a detailed Monte Carlo analysis has been performed by modifying the detector models stepwise to study the influences of the detector's components.
methodsSmall field output correction factors have been determined for the new unshielded silicon diode detector, microSilicon (type 60023, PTW Freiburg, Germany) as well as for the predecessors Diode E (type 60017, PTW Freiburg, Germany) and Diode SRS (type 60018, PTW Freiburg, Germany) for a Varian TrueBeam linear accelerator at 6 MV and a Cyberknife system. For the experimental determination, an Exradin W1 scintillation detector (Standard Imaging, Middleton, USA) has been used as reference. The Monte Carlo simulations have been performed with EGSnrc and phase space files from IAEA as well as detector models according to manufacturer blueprints. To investigate the influence of the detector's components, the detector models have been modified stepwise.
resultsThe correction factors for the smallest field size investigated at the TrueBeam linear accelerator (equivalent dosimetric square field side length S
conclusionThe microSilicon (type 60023) detector requires less correction than its predecessors, Diode E (type 60017) and Diode SRS (type 60018). The detector housing has been demonstrated to cause the largest perturbation, mainly due to the enhanced density of the epoxy encapsulation surrounding the silicon chip. This density has been rendered more water equivalent in case of the microSilicon detector to minimize the associated perturbation. The sensitive volume itself has been shown not to cause observable field size-dependent perturbation except for the volume-averaging effect, where the slightly larger diameter of the sensitive volume of the microSilicon (1.5 mm) is still small at the smallest field size investigated with corrections <2%. The new microSilicon fulfils the 5% correction limit recommended by the TRS 483 for output factor measurements at all conditions investigated in this work.
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