A detailed investigation of non-iterative methods for 3D SPECT image reconstruction

Author

Pan, Xiaochuan

Author_Institution

Dept. of Radiol., Chicago Univ., IL, USA

Volume

2

fYear

1997

fDate

9-15 Nov 1997

Firstpage

1747

Abstract

The authors present an alternative approach for derivation of relationships between the ideal and modified sinograms in 3D SPECT with uniform attenuation and distance-dependent spatial resolution, and they investigate systematically the implication of the spatial resolution function on these relationships as well as on the ideal-sinogram estimation methods that are developed from these relationships. In the authors´ theory, the optical transfer function (OTF) of the resolution function is required to have a specific form. In this work, they develop a formula for converting a general OTF into this form so that their theory can be applied

Keywords

image reconstruction; image resolution; medical image processing; single photon emission computed tomography; 3D SPECT image reconstruction; distance-dependent spatial resolution; ideal sinograms; medical diagnostic imaging; modified sinograms; noniterative methods; nuclear medicine; uniform attenuation; Attenuation; Fourier transforms; Image converters; Image reconstruction; Image sampling; Optical attenuators; Optical scattering; Radiology; Spatial resolution; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1997. IEEE

Conference_Location

Albuquerque, NM

ISSN

1082-3654

Print_ISBN

0-7803-4258-5

Type

conf

DOI

10.1109/NSSMIC.1997.670654

Filename

670654