Investigations into a positron emission imaging algorithm

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dc.contributor.advisorBuffler, Andyen_ZA
dc.contributor.advisorGovender, Indresanen_ZA
dc.contributor.authorBickell, Matthewen_ZA
dc.date.accessioned2015-01-11T13:32:48Z
dc.date.available2015-01-11T13:32:48Z
dc.date.issued2012en_ZA
dc.descriptionIncludes abstract.en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractA positron emission imaging algorithm which makes use of the entire set of lines-of-response in list-mode form is presented. The algorithm parameterises the lines-of-response by a Cartesian mesh over the field-of-view of a Positron Emission Tomography (PET) scanner to find their density distribution throughout the mesh. The algorithm is applied to PET image reconstruction and Positron Emission Particle Tracking (PEPT). For the PET image reconstruction, a redistribution of the lines-of-response is employed to remove the discrete nature of the data caused by the finite size of the detector cells, and once the density distribution has been determined, it is filtered and corrected for attenuation. The algorithm is applied to static and dynamic systems of hard phantoms, biological specimens and fluid flow through a column. In the dynamic systems, timesteps as low as 1 second are achieved. The results from the algorithm are compared to the standard Radon transform reconstruction algorithm, and the presented algorithm is observed to produce images with superior edge contrast, smoothness and representation of the physical system.en_ZA
dc.identifier.apacitationBickell, M. (2012). <i>Investigations into a positron emission imaging algorithm</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Physics. Retrieved from http://hdl.handle.net/11427/12106en_ZA
dc.identifier.chicagocitationBickell, Matthew. <i>"Investigations into a positron emission imaging algorithm."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Physics, 2012. http://hdl.handle.net/11427/12106en_ZA
dc.identifier.citationBickell, M. 2012. Investigations into a positron emission imaging algorithm. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Bickell, Matthew AB - A positron emission imaging algorithm which makes use of the entire set of lines-of-response in list-mode form is presented. The algorithm parameterises the lines-of-response by a Cartesian mesh over the field-of-view of a Positron Emission Tomography (PET) scanner to find their density distribution throughout the mesh. The algorithm is applied to PET image reconstruction and Positron Emission Particle Tracking (PEPT). For the PET image reconstruction, a redistribution of the lines-of-response is employed to remove the discrete nature of the data caused by the finite size of the detector cells, and once the density distribution has been determined, it is filtered and corrected for attenuation. The algorithm is applied to static and dynamic systems of hard phantoms, biological specimens and fluid flow through a column. In the dynamic systems, timesteps as low as 1 second are achieved. The results from the algorithm are compared to the standard Radon transform reconstruction algorithm, and the presented algorithm is observed to produce images with superior edge contrast, smoothness and representation of the physical system. DA - 2012 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2012 T1 - Investigations into a positron emission imaging algorithm TI - Investigations into a positron emission imaging algorithm UR - http://hdl.handle.net/11427/12106 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/12106
dc.identifier.vancouvercitationBickell M. Investigations into a positron emission imaging algorithm. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Physics, 2012 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/12106en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Physicsen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherPhysicsen_ZA
dc.titleInvestigations into a positron emission imaging algorithmen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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