Evaluation of MAP image reconstruction with positron range modeling for 3D PET

Author

Bai, Bing ; Laforest, Richard ; Smith, Anne M. ; Leahy, Richard M.

Author_Institution

Siemens Preclinical Solutions, Knoxville, TN

Volume

5

fYear

2005

fDate

23-29 Oct. 2005

Firstpage

2686

Lastpage

2689

Abstract

Positron range effect is one of the fundamental factors limiting the spatial resolution of PET images. In statistical image reconstruction methods, positron range effects can be incorporated into the system model. The resolution recovery by modeling positron range results in an inevitable increase of image noise. We compare the resolution and noise properties of the images reconstructed with or without positron range modeling in this paper. Simulation results show that positron range modeling can lead to improved resolution vs. noise trade-off

Keywords

image reconstruction; image resolution; maximum likelihood estimation; medical image processing; noise; positron emission tomography; 3D PET; MAP image reconstruction; image noise; positron range modeling; resolution recovery; spatial resolution; statistical methods; Animals; Biomedical imaging; Density functional theory; Image reconstruction; Image resolution; Imaging phantoms; Isotopes; Kernel; Positron emission tomography; Spatial resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2005 IEEE

Conference_Location

Fajardo

ISSN

1095-7863

Print_ISBN

0-7803-9221-3

Type

conf

DOI

10.1109/NSSMIC.2005.1596890

Filename

1596890