Characterization of Dosimeters for Small Field Applications Including Comparisons to Monte Carlo and Treatment Planning System Computed Doses

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dc.contributor.authorTimakova, Elena
dc.contributor.supervisorZavgorodni, Sergei
dc.contributor.supervisorBazalova-Carter, Magdalena
dc.date.accessioned2023-01-04T20:59:43Z
dc.date.available2023-01-04T20:59:43Z
dc.date.copyright2022en_US
dc.date.issued2023-01-04
dc.degree.departmentDepartment of Physics and Astronomyen_US
dc.degree.levelMaster of Science M.Sc.en_US
dc.description.abstractIn radiation therapy, accurately determining the dose to a patient is extremely important for optimal patient outcomes and efficient clinical flow. Under small field conditions, experimental dosimetry is difficult due to fluence perturbation effects and computational dosimetry poses challenges related to limits on computation time. In this work, two novel dosimeters were characterized for important properties of a small field dosimeter. Then, the dosimeters’ performance was compared to treatment planning system dose algorithms and Monte Carlo methods. The new dosimeters showed promising results with relatively little effort put towards set-up and measurement acquisition for normal clinical conditions. Good agreement was seen for isocentric clinical SRT plan delivery with targets around 2 cm in diameter and modulation scores of around 5 MU/cGy. As field sizes fall below 1 x 1 cm2, fields move off axis, and/or plans increase in modulation score beyond 5 MU/cGy, disagreements begin to emerge.en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/14616
dc.languageEnglisheng
dc.language.isoenen_US
dc.rightsAvailable to the World Wide Weben_US
dc.titleCharacterization of Dosimeters for Small Field Applications Including Comparisons to Monte Carlo and Treatment Planning System Computed Dosesen_US
dc.typeThesisen_US

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