Publication:
Efficient methodology for 3D statistical reconstruction of high resolution coplanar PET/CT scanner

Thumbnail Image
Identifiers
URI: https://hdl.handle.net/10016/12217
ISSN: 1082-3654
ISBN: 978-1-4244-2714-7
DOI: 10.1109/NSSMIC.2008.4774384
Files
efficient_IEEE_2008_ps.pdf (6.89 MB)
Publication date
2008-10
Defense date
Authors
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE
Impact
Google Scholar
Export
Research Projects
Organizational Units
Journal Issue
Abstract
A fully 3D statistical image reconstruction algorithm has been developed for a high-resolution coplanar PETtCT scanner based on rotating planar PET detectors. The system matrix has been modeled with custom Monte Carlo techniques optimized for the specific scanner architecture. The system model includes positron range, non-colinearity of gamma rays and crystal interaction modelling with attenuation and Compton scattering effects. Only 0.21 % of the system matrix columns are modeled in detail, obtaining the rest of the values with axial and transaxial voxel-driven symmetries. The iterative algorithm is a fully 3D approach, regularized with the anatomical registered image using a novel version of the minimum cross entropy (MXE) scheme, and accelerated employing ordered subsets. The proposed method has been shown to produce images with superior quality than 3D hybrid (FORE+2D-OSEM) algorithms applied on synthetic GATE data, as well as on real small animal acquisitions
Description
Proceeding of: 2008 IEEE Nuclear Science Symposium Conference Record (NSS '08), Dresden, Germany, 19-25 Oct. 2008
Keywords
Bibliographic citation
2008 IEEE Nuclear Science Symposium Conference Record, Oct. 2008, p. 5096-5100
Collections
DBIAB - BIIG - Book Chapters
DBIAB - BIIG - Proceedings