Image reconstruction algorithm for a rotating slat collimator

Author

Zeng, Gengsheng L. ; Gagnon, Daniel ; Matthews, Christopher G. ; Kolthammer, Jeffery A. ; Radachy, Jason D. ; Hawkins, William

Author_Institution

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

Volume

4

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1869

Lastpage

1873

Abstract

A slat collimator in SPECT (single photon emission computed tomography) consists of a set of parallel slats. As the collimator spins, the detector measures a one-dimensional projection data set. A complete data set can be obtained by rotating the detector/collimator assembly around the object (patient) while the collimator spins continuously. The measured projection data are assumed to be weighted planar integrals of the object. This paper describes the development of an approximate three-dimensional image reconstruction algorithm for a rotating/spinning slat collimator. This algorithm is in filtered backprojection form. Computer simulations were performed to verify the effectiveness of the algorithm

Keywords

medical image processing; single photon emission computed tomography; SPECT; detector/collimator assembly; filtered backprojection form; image reconstruction algorithm; projection data set; rotating slat collimator; single photon emission computed tomography; weighted planar integrals; Assembly; Gamma ray detection; Gamma ray detectors; Geometry; Image reconstruction; Object detection; Optical collimators; Single photon emission computed tomography; Spinning; Strips;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2001 IEEE

Conference_Location

San Diego, CA

ISSN

1082-3654

Print_ISBN

0-7803-7324-3

Type

conf

DOI

10.1109/NSSMIC.2001.1009188

Filename

1009188