Three-dimensional motion estimation with image reconstruction for gated cardiac ECT

Author

Cao, Zixiong ; Gilland, David R. ; Mair, Bernard A. ; Jaszczak, Ronald J.

Author_Institution

Biomed. Eng. Dept., Florida Univ., Gainesville, FL, USA

Volume

50

Issue

3

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

384

Lastpage

388

Abstract

The primary goal of this work was to develop and evaluate a new method for simultaneous three-dimensional motion estimation and image reconstruction for gated cardiac emission computed tomography (ECT). The method employs a two-step iterative procedure for obtaining the motion and reconstructed image estimates. The method was evaluated using both simulated and physical phantoms designed to mimic myocardial perfusion imaging in ECT. In both the simulated and physical phantom studies, the images reconstructed by the simultaneous method showed improved noise characteristics relative to a standard iterative algorithm. The percent error of the motion estimate ranged from 16% to 59% for the simulated phantom study, and 45% to 65% for the physical phantom study, depending on the position within the myocardium.

Keywords

computerised tomography; image reconstruction; iterative methods; medical image processing; motion estimation; positron emission tomography; single photon emission computed tomography; 3D motion estimation; PET; SPECT; emission computed tomography; gated cardiac ECT; image reconstruction; myocardium; physical phantom study; two-step iterative procedure; Biomedical engineering; Computational modeling; Electrical capacitance tomography; Image reconstruction; Imaging phantoms; Motion analysis; Motion estimation; Myocardium; Positron emission tomography; Single photon emission computed tomography;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2003.812444

Filename

1208599