Document Detail


Three-dimensional PET reconstruction with time-of-flight measurement.
MedLine Citation:
PMID:  1565699     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The interest in fully three-dimensional image reconstruction, especially in positron emission tomography (PET) has significantly increased for the last few years. Taking into account the cross-plane gamma rays in a three-dimensional reconstruction algorithm improves the sensitivity. At LETI, our specialty in PET is the time-of-flight (TOF) measurement. Thus, we present in this article two reconstruction techniques for 3D TOF PET. The first is a backprojection-convolution algorithm. Due to the redundancy in the 3D data set, there exists an infinite number of filters. As Defrise and co-workers did for classical tomography, we established a general condition that characterizes the filters and propose an algorithm with a factorizable filter. However, this first technique requires an acquisition system with revolution symmetry. Thus, we present a second one which is adapted to a detection geometry with a small number of angular positions. It consists of a multi-image deconvolution algorithm with Wiener filter.
Authors:
A Mallon; P Grangeat
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Physics in medicine and biology     Volume:  37     ISSN:  0031-9155     ISO Abbreviation:  Phys Med Biol     Publication Date:  1992 Mar 
Date Detail:
Created Date:  1992-05-21     Completed Date:  1992-05-21     Revised Date:  2000-12-18    
Medline Journal Info:
Nlm Unique ID:  0401220     Medline TA:  Phys Med Biol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  717-29     Citation Subset:  IM    
Affiliation:
LETI, Département Systèmes, SETIA, Centre d'Etudes Nucléaires de Grenoble, Grenoble, France.
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MeSH Terms
Descriptor/Qualifier:
Algorithms
Image Processing, Computer-Assisted / methods*
Tomography, Emission-Computed / methods*

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