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 proceedingConference 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 languageEnglish (US)
Title of host publication2006 IEEE Nuclear Science Symposium - Conference Record
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2688-2694
Number of pages7
ISBN (Print)1424405610, 9781424405619
DOIs
StatePublished - Jan 1 2006
Event2006 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 2006Nov 4 2006

Publication series

NameIEEE Nuclear Science Symposium Conference Record
Volume5
ISSN (Print)1095-7863

Other

Other2006 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
CountryUnited States
CitySan Diego, CA
Period10/29/0611/4/06

Keywords

  • Gated cardiac emission computed tomography
  • Myocardial motion estimation

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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  • 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). [4179592] (IEEE Nuclear Science Symposium Conference Record; Vol. 5). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2006.356435