Title :
A fully 4D mesh parameterisation PET image reconstruction algorithm for list-mode data
Author :
Bickell, Matthew G. ; Buffler, Andy ; Govender, Indresan
Author_Institution :
PEPT Cape Town Res. Group, Univ. of Cape Town, Cape Town, South Africa
Abstract :
A PET reconstruction algorithm which makes use of the entire set of lines of response (LORs) in list-mode form is presented. The LORs are parameterised by a Cartesian mesh over the field-of-view of the scanner and the distribution of the LORs over this mesh is determined. Artefacts associated with the discrete nature of the data are removed using a redistribution of the LORs. Experimental work using static and dynamic hard phantoms as well soft tissue was conducted with the Siemens ECAT HR++ “EXACT3D” tomograph; results are compared to the standard Radon reconstruction algorithm using direct and cross planes.
Keywords :
high energy physics instrumentation computing; image reconstruction; positron emission tomography; 4D mesh parameterisation; Cartesian mesh; PET image reconstruction algorithm; Siemens ECAT HR++ EXACT3D tomograph; dynamic hard phantom; lines-of-response set; list-mode data; list-mode form; positron emission tomography; radon reconstruction algorithm; scanner field-of-view; static hard phantom; Image reconstruction; Image resolution; Nuclear measurements; Phantoms; Runtime;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE
Conference_Location :
Valencia
Print_ISBN :
978-1-4673-0118-3
DOI :
10.1109/NSSMIC.2011.6152703
