Noise propagation in electronically collimated single photon imaging

Author

Singh, Manbir ; Leahy, Richard ; Brechner, Ricardo ; Hebert, Tom

Author_Institution

Univ. of Southern California, Los Angeles, CA, USA

Volume

35

Issue

1

fYear

1988

fDate

2/1/1988 12:00:00 AM

Firstpage

772

Lastpage

777

Abstract

Cone-beam views of an object are produced from counts acquired with an electronically collimated system for SPECT (single-photon-emission computed tomography) using a deconvolution procedure. The propagation of noise through this procedure has been investigated using four approaches: a theoretical analysis using an approximate description of the point spread function in the form of an annulus; inverse filtering of a simulated disk source containing hot and cold regions; application of ART (algebraic reconstruction technique) using an accurate point spread function; and experimental reconstruction of a Cs-137 disk source.

Keywords

computerised tomography; radioisotope scanning and imaging; ¹³⁷Cs; SPECT; algebraic reconstruction technique; cone beam views; deconvolution procedure; electronically collimated single photon imaging; inverse filtering; noise; point spread function; propagation; simulated disk source; Computer simulation; Electromagnetic scattering; Filtering; Image reconstruction; Optical collimators; Particle scattering; Performance analysis; Signal resolution; Single photon emission computed tomography; Subspace constraints;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.12830

Filename

12830