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Weaver, M.; Petasecca, M.; Cutajar, D.L.; Lerch, M.L.F.; De Geronimo, G.; Pinelli, D.A.; Cullen, A.J.; Prokopovich, D.A.; Perevertaylo, V.L.; Rosenfeld, A.B.
Radiation measurements, 12/2014, Letnik: 71Journal Article, Conference Proceeding
Intraocular cancer is a serious threat to the lives of those that suffer from it. Dosimetry for eye brachytherapy presents a significant challenge due to the inherently steep dose gradients that are needed to treat such small tumours in close proximity to sensitive normal structures. This issue is addressed by providing much needed quality assurance to eye brachytherapy, a novel volumetric dosimetry system, called Panoptes was developed. This study focuses on the preliminary characterisation and calibration of the system. Using ion beam facilities, the custom, pixelated silicon detector of Panoptes was shown to have good charge collection uniformity and a well defined sensitive volume. Flat-field calibration was conducted on the device using a 250 kVp orthovoltage beam. Finally, the detector and phantom were simulated with Monte Carlo in Geant4, to create water equivalent dose correction factors for each pixel across a range of angles. •Volumetric detector system produced for plaque brachytherapy.•Orthovoltage, flat-field calibration performed for detector pixels.•Monte Carlo simulation showed mostly little angular deviation across all angles.•Ion beam induced charge collection showed pixels uniform and fully depleted.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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