Cardiac motion estimation from gated emission computed tomography images

Jing Tang; W. Paul Segars; Benjamin M.W. Tsui

doi:10.1109/NSSMIC.2006.356435

Cardiac motion estimation from gated emission computed tomography images

Jing Tang, W. Paul Segars, Benjamin M.W. Tsui

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Quantitative description of the cardiac left ventricle (LV) motion is desirable to assist in detecting myocardial motion abnormalities. It has been recognized that the torsion component of the LV movement is considerably more difficult to track than its radial counterpart. We develop a motion estimation method that estimates three-dimensional (3-D) LV motion vector field (MVF) that includes the twisting motion from four-dimensional (4-D) gated myocardial perfusion (MP) emission computed tomography (ECT) images. The method is implemented through searching for an MVF that minimizes a cost function consisting of the image matching error between two frames and the weighted strain energy constraint that prevents physically implausible movement. The strain energy is calculated on segmented heart voxels with physical parameters that model the material properties of the myocardium. The close-to-optimal weight of the strain energy was obtained by minimizing the root-mean-square errors of the estimated MVF from standard NCAT phantom images simulating gated MP data. The performance of this method has been quantitatively evaluated, in estimating MVF from NCAT generated images with specified motion corresponding to varied LV twisting angles (different from the standard phantom) and to regional LV motion defects. The estimated defect MVF can be distinguished from the estimated normal MVF.

Original language	English (US)
Title of host publication	2006 IEEE Nuclear Science Symposium - Conference Record
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	2688-2694
Number of pages	7
ISBN (Print)	1424405610, 9781424405619
DOIs	https://doi.org/10.1109/NSSMIC.2006.356435
State	Published - 2006
Externally published	Yes
Event	2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD - San Diego, CA, United States Duration: Oct 29 2006 → Nov 4 2006

Publication series

Name	IEEE Nuclear Science Symposium Conference Record
Volume	5
ISSN (Print)	1095-7863

Other

Other	2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD
Country/Territory	United States
City	San Diego, CA
Period	10/29/06 → 11/4/06

Keywords

Gated cardiac emission computed tomography
Myocardial motion estimation

ASJC Scopus subject areas

Radiation
Nuclear and High Energy Physics
Radiology Nuclear Medicine and imaging

Access to Document

10.1109/NSSMIC.2006.356435

Cite this

Tang, J., Segars, W. P., & Tsui, B. M. W. (2006). Cardiac motion estimation from gated emission computed tomography images. In 2006 IEEE Nuclear Science Symposium - Conference Record (pp. 2688-2694). Article 4179592 (IEEE Nuclear Science Symposium Conference Record; Vol. 5). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2006.356435

Cardiac motion estimation from gated emission computed tomography images. / Tang, Jing; Segars, W. Paul; Tsui, Benjamin M.W.
2006 IEEE Nuclear Science Symposium - Conference Record. Institute of Electrical and Electronics Engineers Inc., 2006. p. 2688-2694 4179592 (IEEE Nuclear Science Symposium Conference Record; Vol. 5).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Tang, J, Segars, WP & Tsui, BMW 2006, Cardiac motion estimation from gated emission computed tomography images. in 2006 IEEE Nuclear Science Symposium - Conference Record., 4179592, IEEE Nuclear Science Symposium Conference Record, vol. 5, Institute of Electrical and Electronics Engineers Inc., pp. 2688-2694, 2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD, San Diego, CA, United States, 10/29/06. https://doi.org/10.1109/NSSMIC.2006.356435

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AB - Quantitative description of the cardiac left ventricle (LV) motion is desirable to assist in detecting myocardial motion abnormalities. It has been recognized that the torsion component of the LV movement is considerably more difficult to track than its radial counterpart. We develop a motion estimation method that estimates three-dimensional (3-D) LV motion vector field (MVF) that includes the twisting motion from four-dimensional (4-D) gated myocardial perfusion (MP) emission computed tomography (ECT) images. The method is implemented through searching for an MVF that minimizes a cost function consisting of the image matching error between two frames and the weighted strain energy constraint that prevents physically implausible movement. The strain energy is calculated on segmented heart voxels with physical parameters that model the material properties of the myocardium. The close-to-optimal weight of the strain energy was obtained by minimizing the root-mean-square errors of the estimated MVF from standard NCAT phantom images simulating gated MP data. The performance of this method has been quantitatively evaluated, in estimating MVF from NCAT generated images with specified motion corresponding to varied LV twisting angles (different from the standard phantom) and to regional LV motion defects. The estimated defect MVF can be distinguished from the estimated normal MVF.

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Cardiac motion estimation from gated emission computed tomography images

Abstract

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Keywords

ASJC Scopus subject areas

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