Image reconstruction algorithm for a SPECT system with a convergent rotating slat collimator

Author

Zeng, Gengsheng L. ; Gagnon, Daniel

Author_Institution

Med. Imaging Res. Lab., Univ. of Utah, Salt Lake City, UT, USA

Volume

51

Issue

1

fYear

2004

Firstpage

142

Lastpage

148

Abstract

In this paper, we suggest the use of a convergent rotating slat collimator in a SPECT system that contains strip-shaped CdZnTe detectors. This CdZnTe imaging device is able to provide better energy resolution than a conventional NaI(Tl) detector. A convergent imaging geometry has a higher detection sensitivity than a parallel imaging geometry when imaging a small object. A novel design method and reconstruction technique are proposed for use in this system.

Keywords

collimators; geometry; image reconstruction; single photon emission computed tomography; CdZnTe imaging device; SPECT system; convergent imaging geometry; convergent rotating slat collimator; detection sensitivity; energy resolution; filtered backprojection; image reconstruction algorithm; parallel imaging geometry; single photon emission computed tomography; strip-shaped CdZnTe detectors; Attenuation; Cameras; Collimators; Detectors; Energy resolution; High-resolution imaging; Image converters; Image reconstruction; Object detection; Scattering;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2003.823042

Filename

1282076