SPECT Reconstruction with a Non-linear Transformed Attenuation Prototype


This work deals with the single photon emission computed tomography (SPECT) reconstruction process. As a SPECT measurement also depends on unknown attenuation properties of the tissue, such a process is challenging. Furthermore, the given attenuation may not be a good approximation to the true attenuation field. Reasons are repositioning or movement of the patient such as relaxation during scan time or even breathing. We propose a novel model for an attenuation correction in SPECT reconstruction, which is a natural extension of an idea of Natterer in that way, as the linear transformation of a so-called attenuation prototype is enhanced to an arbitrary transformation. We present numerical results for a non-linear spline transformation model which clearly indicate the superiority of the proposed reconstruction model compared to the case of no motion correction and the correction with a linear transformation model.
Original languageEnglish
Title of host publicationBildverarbeitung für die Medizin 2011
EditorsHeinz Handels, Jan Ehrhardt, Thomas M. Deserno, Hans-Peter Meinzer, Thomas Tolxdorff
Number of pages5
Place of PublicationBerlin, Heidelberg
PublisherSpringer Berlin Heidelberg
Publication date13.03.2011
ISBN (Print)978-3-642-19334-7
ISBN (Electronic)978-3-642-19335-4
Publication statusPublished - 13.03.2011
EventWorkshops Bildverarbeitung fur die Medizin 2011 - Lübeck, Germany
Duration: 20.03.201122.03.2011
Conference number: 99531


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