Direct estimation of dynamic parameters in SPECT tomography

Author

Hebber, E. ; Oldenburg, D. ; Farnocombe, T. ; Celler, A.

Volume

Issue

fYear

1997

fDate

12/1/1997 12:00:00 AM

Firstpage

2425

Lastpage

2430

Abstract

This paper solves the problem of estimating dynamic parameters of SPECT reconstruction directly from the projections. This is done by spanning the dynamic parameters of each pixel with a basis of exponentials. Any time decay system can be modeled in this way. This process leads to a linear Fredholm integral equation of the first kind which is discretized and then solved with conjugate gradient methods. We tested our algorithm by applying it to a numerical phantom and to a simple real phantom

Keywords

Fredholm integral equations; conjugate gradient methods; image reconstruction; medical image processing; single photon emission computed tomography; SPECT reconstruction; SPECT tomography; conjugate gradient methods; direct estimation; dynamic parameters; exponentials; linear Fredholm integral equation; numerical phantom; pixel; projections; simple real phantom; time decay system; Biological cells; Biological system modeling; Geoscience; Hospitals; Image reconstruction; Imaging phantoms; Integral equations; Oceans; Parameter estimation; Positron emission tomography;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.656447

Filename

656447

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1304068