A new approach to three-dimensional image reconstruction in PET

Author

Erlandsson, Kjell ; Strand, Sven-Erik

Author_Institution

Dept. of Radiat. Phys., Lund Univ., Sweden

Volume

39

Issue

5

fYear

1992

fDate

10/1/1992 12:00:00 AM

Firstpage

1438

Lastpage

1443

Abstract

A new method for three-dimensional image reconstruction in positron emission tomography (PET) was developed for a system consisting of two rotating scintillation cameras with a restricted axial field-of-view. The basic principle of the method is to organize the projection data so that 2-D reconstruction can be used. The method consists of a combination of analytical and algebraic algorithms including an iterative process with two-dimensional reconstruction of transaxial slices and deconvolution of a position dependent axial spread function. This method avoids the complex operation of 3-D backprojection, but can still utilize all the detected events and take advantage of the three-dimensional information. The method has been evaluated with Monte Carlo simulations and phantom measurements

Keywords

computerised tomography; image reconstruction; radioisotope scanning and imaging; Monte Carlo simulations; algebraic algorithms; backprojection; diagnostic nuclear medicine; iterative process; phantom measurements; position dependent axial spread function; positron emission tomography; rotating scintillation cameras; three-dimensional image reconstruction; transaxial slices; Algorithm design and analysis; Cameras; Cancer; Deconvolution; Event detection; Image reconstruction; Physics; Positron emission tomography; Reconstruction algorithms; Solid scintillation detectors;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.173221

Filename

173221