Please use this identifier to cite or link to this item: https://ahro.austin.org.au/austinjspui/handle/1/33288
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dc.contributor.authorShaw, Maddison-
dc.contributor.authorLye, Jessica-
dc.contributor.authorAlves, Andrew-
dc.contributor.authorLehmann, Joerg-
dc.contributor.authorSanagou, Masoumeh-
dc.contributor.authorGeso, Moshi-
dc.contributor.authorBrown, Rhonda-
dc.date2023-
dc.date.accessioned2023-07-14T02:52:26Z-
dc.date.available2023-07-14T02:52:26Z-
dc.date.issued2023-07-03-
dc.identifier.citationPhysica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)2023-07-03; 112en_US
dc.identifier.issn1724-191X-
dc.identifier.urihttps://ahro.austin.org.au/austinjspui/handle/1/33288-
dc.description.abstractStereotactic Body Radiotherapy (SBRT) for lung tumours has become a mainstay of clinical practice worldwide. Measurements in anthropomorphic phantoms enable verification of patient dose in clinically realistic scenarios. Correction factors for reporting dose to the tissue equivalent materials in a lung phantom are presented in the context of a national dosimetry audit for SBRT. Analysis of dosimetry audit results is performed showing inaccuracies of common dose calculation algorithms in soft tissue lung target, inhale lung material and at tissue interfaces. Monte Carlo based simulation of correction factors for detectors in non-water tissue was performed for the soft tissue lung target and inhale lung materials of a modified CIRS SBRT thorax phantom. The corrections were determined for Gafchromic EBT3 Film and PTW 60019 microDiamond detectors used for measurements of 168 SBRT lung plans in an end-to-end dosimetry audit. Corrections were derived for dose to medium (Dm,m) and dose to water (Dw,w) scenarios. Correction factors were up to -3.4% and 9.2% for in field and out of field lung respectively. Overall, application of the correction factors improved the measurement-to-plan dose discrepancy. For the soft tissue lung target, agreement between planned and measured dose was within average of 3% for both film and microDiamond measurements. The correction factors developed for this work are provided for clinical users to apply to commissioning measurements using a commercially available thorax phantom where inhomogeneity is present. The end-to-end dosimetry audit demonstrates dose calculation algorithms can underestimate dose at lung tumour/lung tissue interfaces by an average of 2-5%.en_US
dc.language.isoeng-
dc.subjectAlgorithmen_US
dc.subjectDose calculationen_US
dc.subjectDosimetry auditen_US
dc.subjectFilm dosimetryen_US
dc.subjectLungen_US
dc.subjectMonte Carloen_US
dc.subjectQAen_US
dc.subjectSABRen_US
dc.subjectSBRTen_US
dc.subjectStereotacticen_US
dc.titleMeasuring dose in lung identifies peripheral tumour dose inaccuracy in SBRT audit.en_US
dc.typeJournal Articleen_US
dc.identifier.journaltitlePhysica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)en_US
dc.identifier.affiliationAustralian Clinical Dosimetry Service, Australian Radiation Protection and Nuclear Safety Agency, Melbourne, Australia; School of Health and Biomedical Sciences, RMIT University, Melbourne, Australia.en_US
dc.identifier.affiliationOlivia Newton-John Cancer Wellness and Research Centreen_US
dc.identifier.affiliationDepartment of Radiation Oncology, Calvary Mater Newcastle, Newcastle, Australia; School of Science, RMIT University, Melbourne, Australia; School of Mathematical and Physical Sciences, University of Newcastle, Australia; Institute of Medical Physics, University of Sydney, Australia.en_US
dc.identifier.affiliationAustralian Radiation Protection and Nuclear Safety Agency, Melbourne, Australia.en_US
dc.identifier.affiliationSchool of Health and Biomedical Sciences, RMIT University, Melbourne, Australia.en_US
dc.identifier.affiliationAustralian Clinical Dosimetry Service, Australian Radiation Protection and Nuclear Safety Agency, Melbourne, Australia.en_US
dc.identifier.doi10.1016/j.ejmp.2023.102632en_US
dc.type.contentTexten_US
dc.identifier.pubmedid37406592-
dc.description.volume112-
dc.description.startpage102632-
local.name.researcherLye, Jessica
item.languageiso639-1en-
item.fulltextNo Fulltext-
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.openairetypeJournal Article-
crisitem.author.deptRadiation Oncology-
crisitem.author.deptOlivia Newton-John Cancer Wellness and Research Centre-
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