A simulation study of BrachyShade, a shadow-based internal source tracking system for HDR prostate brachytherapy

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dc.contributor.authorAlabd, Ren_AU
dc.contributor.authorSafavi-Naeini, Men_AU
dc.contributor.authorWilson, KJen_AU
dc.contributor.authorRosenfeld, ABen_AU
dc.contributor.authorFranklin, DRen_AU
dc.date.accessioned2025-01-10T02:57:05Zen_AU
dc.date.available2025-01-10T02:57:05Zen_AU
dc.date.issued2018-10-18en_AU
dc.date.statistics2024-10-30en_AU
dc.description.abstractThis paper presents a simulation study of BrachyShade, a proposed internal source-tracking system for real time quality assurance in high dose rate prostate brachytherapy. BrachyShade consists of a set of spherical tungsten occluders located above a pixellated silicon photodetector. The source location is estimated by minimising the mean squared error between a parametric model of the shadow image and acquired images of the shadows projected on the detector plane. A novel algorithm is finally employed to correct the systemic error resulting from Compton scattering in the medium. The worst-case error obtained with BrachyShade for a 13.5 ms image acquisition is less than 1.3 mm in the most distant part of the treatment volume, while for 75% of source locations an error of less than 0.42 mm was achieved. © 2018 Commonwealth of Australia. Department of Education and Training, and Department of Industry, Innovation and Science.en_AU
dc.description.sponsorshipThis research was supported in part by the ARCLab facility at UTS.en_AU
dc.format.mediumElectronicen_AU
dc.identifier.articlenumber205019en_AU
dc.identifier.citationAlabd, R., Safavi-Naeini, M., Wilson, K. J., Rosenfeld, A. B., & Franklin, D. R. (2018). A simulation study of BrachyShade, a shadow-based internal source tracking system for HDR prostate brachytherapy. Physics in Medicine & Biology, 63(20), 205019. doi:10.1088/1361-6560/aae33den_AU
dc.identifier.issn0031-9155en_AU
dc.identifier.issn1361-6560en_AU
dc.identifier.issue20en_AU
dc.identifier.journaltitlePhysics in Medicine and Biologyen_AU
dc.identifier.urihttps://doi.org/10.1088/1361-6560/aae33den_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15895en_AU
dc.identifier.volume63en_AU
dc.languageengen_AU
dc.language.isoenen_AU
dc.publisherIOP Publishingen_AU
dc.subjectSimulationen_AU
dc.subjectProstateen_AU
dc.subjectBrachytherapyen_AU
dc.subjectSiliconen_AU
dc.subjectParametric amplifiersen_AU
dc.subjectTungstenen_AU
dc.subjectPhotodetectorsen_AU
dc.subjectNeoplasmsen_AU
dc.subjectScatteringen_AU
dc.titleA simulation study of BrachyShade, a shadow-based internal source tracking system for HDR prostate brachytherapyen_AU
dc.typeJournal Articleen_AU
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