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Level set method for positron emission tomography

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Level set method for positron emission tomography

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dc.contributor.author Chan, Tony F.
dc.contributor.author Li, Hongwei
dc.contributor.author Lysaker, Marius
dc.contributor.author Tai, Xue Cheng
dc.date.accessioned 2009-08-12T02:48:30Z
dc.date.available 2009-08-12T02:48:30Z
dc.date.copyright 2007
dc.date.issued 2009-08-12T02:48:30Z
dc.identifier.citation Chan, T. F., Li, H., Lysaker, M., & Tai, X. C. (2007). Level set method for positron emission tomography. International Journal of Biomedical Imaging, 2007, 1-15.
dc.identifier.issn 1687-4188
dc.identifier.uri http://hdl.handle.net/10220/6053
dc.description.abstract In positron emission tomography (PET), a radioactive compound is injected into the body to promote a tissue-dependent emission rate. Expectation maximization (EM) reconstruction algorithms are iterative techniques which estimate the concentration coefficients that provide the best fitted solution, for example, a maximum likelihood estimate. In this paper, we combine the EM algorithm with a level set approach. The level set method is used to capture the coarse scale information and the discontinuities of the concentration coefficients. An intrinsic advantage of the level set formulation is that anatomical information can be efficiently incorporated and used in an easy and natural way. We utilize a multiple level set formulation to represent the geometry of the objects in the scene. The proposed algorithm can be applied to any PET configuration, without major modifications.
dc.format.extent 15 p.
dc.language.iso en
dc.relation.ispartofseries International Journal of Biomedical Imaging.
dc.rights International Journal of Biomedical Imaging © copyright 2007 Hindawi Publishing Corporation. The journal's website is located at http://www.hindawi.com/journals/ijbi/.
dc.subject DRNTU::Science::Mathematics.
dc.title Level set method for positron emission tomography
dc.type Journal Article
dc.contributor.school School of Physical and Mathematical Sciences
dc.identifier.openurl http://sfxna09.hosted.exlibrisgroup.com:3410/ntu/sfxlcl3?sid=metalib:ELSEVIER_SCIRUS&id=doi:&genre=&isbn=&issn=&date=2007&volume=&issue=&spage=26950&epage=&aulast=Chan&aufirst=%20Tony%20F&auinit=&title=International%20journal%20of%20biomedical%20imaging&atitle=Level%20set%20method%20for%20positron%20emission%20tomography%2E&sici
dc.identifier.doi http://dx.doi.org/10.1155/2007/26950
dc.description.version Published version

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