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Proceedings Paper

Motion-compensated fully 4D reconstruction of gated cardiac sequences
Author(s): Erwan Gravier; Yongyi Yang
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Paper Abstract

In this paper we investigate the benefits of a spatio-temporal approach for reconstruction of cardiac image sequences. We introduce a temporal prior based on motion-compensation to enforce temporal correlations along the curved trajectories that follow the cardiac motion. The image frames in a sequence are reconstructed simultaneously through maximum a posteriori (MAP) estimation. We evaluated the performance of our algorithm using the 4D gated mathematical cardiac-torso (gMCAT) D1.01 phantom to simulate gated SPECT perfusion imaging with Tc-99m-sestamibi. Our experimental results show that the proposed approach could significantly improve the accuracy of reconstructed images without causing cross-frame blurring that may arise form the cardiac motion.

Paper Details

Date Published: 11 March 2005
PDF: 11 pages
Proc. SPIE 5674, Computational Imaging III, (11 March 2005); doi: 10.1117/12.598885
Show Author Affiliations
Erwan Gravier, Illinois Institute of Technology (United States)
Yongyi Yang, Illinois Institute of Technology (United States)


Published in SPIE Proceedings Vol. 5674:
Computational Imaging III
Charles A. Bouman; Eric L. Miller, Editor(s)

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