Proton pencil beam kernels as extracted from Geant4 Monte Carlo simulations

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dc.contributor.advisorNewman, Richard T.en_ZA
dc.contributor.advisorDe Kock, Evan A.en_ZA
dc.contributor.authorChisapi, Maluba Vernon J.en_ZA
dc.contributor.otherStellenbosch University. Faculty of Science. Dept. of Physicsen_ZA
dc.date.accessioned2016-12-22T13:44:57Z
dc.date.available2016-12-22T13:44:57Z
dc.date.issued2016-12
dc.descriptionThesis (MSc)--Stellenbosch University, 2016en_ZA
dc.description.abstractENGLISH ABSTRACT : The contribution of primary protons, secondary protons, heavy recoil ions, and other secondary particles to the total energy deposited in water by a proton pencil beam (in the therapeutic energy regime) has been investigated using the Geant4 Monte Carlo simulation toolkit. Simulation results have been compared with those calculated using dose distribution functions of the analytical beamlet model of Ulmer et al., which is currently used in the commercial proton treatment-planning package EclipseTM. Optimized settings for a robust, accurate, and computationally inexpensive Geant4 simulations have also been proposed.en_ZA
dc.description.abstractAFRIKAANSE OPSOMMING :Monte Carlo simulasies is gedoen met Geant4 om die primêre protone, sekondêre protone, swaar terugslag-ione en ander sekondêre deeltjies se bydraes te bepaal tot die energie wat deur 'n dun protonbundel in water gedeponeer word. Hierdie ondersoek is uitgevoer vir protone in die terapeutiese energiegebied. Die resultate wat vekrei is van die Monte Carlo simulasies is vergelyk met dosisverspreidings wat breken is venaf die analitiese dun-bundel model van Ulmer et al. Dié model word tans gebruik in die EclipseTM stelsel, wat 'n kommersiële beplanningsisteem vir protonterapie is. Verstellings word ook verskaf wat verseker dat die Geant4 simulasies geoptimaliseer is in terme van robuustheid, akkuraatheid en berekeningspoed.af_ZA
dc.format.extentix, 81 pages : illustrations (some colour)en_ZA
dc.identifier.urihttp://hdl.handle.net/10019.1/100363
dc.language.isoen_ZAen_ZA
dc.publisherStellenbosch : Stellenbosch Universityen_ZA
dc.rights.holderStellenbosch Universityen_ZA
dc.subjectProton radiation therapyen_ZA
dc.subjectPencil beamsen_ZA
dc.subjectMonte Carlo simulationsen_ZA
dc.subjectMonte Carlo methoden_ZA
dc.subjectCancer -- Treatment -- Dose distributionsen_ZA
dc.subjectUCTDE
dc.titleProton pencil beam kernels as extracted from Geant4 Monte Carlo simulationsen_ZA
dc.typeThesisen_ZA
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