| Reconstruction of 3-D left ventricular motion from planar tagged cardiac MR images: an estimation theoretic approach. | |
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MedLine Citation:
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PMID: 18215867 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Magnetic resonance (MR) tagging has shown great potential for noninvasive measurement of the motion of a beating heart. In MR tagged images, the heart appears with a spatially encoded pattern that moves with the tissue. The position of the tag pattern in each frame of the image sequence can be used to obtain a measurement of the 3-D displacement field of the myocardium. The measurements are sparse, however, and interpolation is required to reconstruct a dense displacement field from which measures of local contractile performance such as strain can be computed. Here, the authors propose a method for estimating a dense displacement field from sparse displacement measurements. Their approach is based on a multidimensional stochastic model for the smoothness and divergence of the displacement field and the Fisher estimation framework. The main feature of this method is that both the displacement field model and the resulting estimate equation are defined only on the irregular domain of the myocardium. The authors' methods are validated on both simulated and in vivo heart data. |
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Authors:
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T R Denney; J L Prince |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: IEEE transactions on medical imaging Volume: 14 ISSN: 0278-0062 ISO Abbreviation: IEEE Trans Med Imaging Publication Date: 1995 |
Date Detail:
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Created Date: 2008-01-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8310780 Medline TA: IEEE Trans Med Imaging Country: United States |
Other Details:
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Languages: eng Pagination: 625-35 Citation Subset: - |
Affiliation:
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Dept. of Electr. Eng., Auburn Univ., AL. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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