Simulated One-Pass List-Mode: A highly flexible method of image reconstruction for PET

Author

Gillam, J.E. ; Solevi, P. ; Oliver, J.E. ; Rafecas

Author_Institution

Inst. de Fis. Corpuscular (IFIC), Univ. de Valencia, València, Spain

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

4206

Lastpage

4210

Abstract

Simulated One Pass List-mode is a means of image-reconstruction that distributes on-the-fly calculations of the full system matrix across multiple iterations during Maximum Likelihood-Expectation Maximization image reconstruction. On the fly list-mode processing of coincidence data provides a very flexible approach to image reconstruction that can be applied to many novel systems for Positron Emission Tomography. However, in addition to standard on-the-fly calculation and list-mode methods, Simulated One Pass List-mode provides for extra possibilities during image reconstruction. Two possibilities are investigated here: system modeling accuracy can be altered at each iteration and enhanced modeling can be conduced only for specific Regions of Interest. In this investigation simulated data from a simple two dimensional PET system is used to demonstrate these two advantages of Simulated One Pass List-mode image reconstruction for Positron Emission Tomography.

Keywords

image reconstruction; iterative methods; maximum likelihood estimation; medical image processing; positron emission tomography; 2D PET system; coincidence data; fly list-mode processing; full system matrix; maximum likelihood-expectation maximization image reconstruction; multiple iterations; on-the-fly calculations; positron emission tomography; simulated one pass list-mode image reconstruction; system modeling accuracy;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6153806

Filename

6153806