Document Detail


Cardiac Fiber Unfolding by Semidefinite Programming.
MedLine Citation:
PMID:  25291787     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Diffusion-tensor imaging allows noninvasive assessment of the myocardial fiber architecture, which is fundamental in understanding the mechanics of the heart. In this context, tractography techniques are often used for representing and visualizing cardiac fibers, but their output is only qualitative. We introduce here a new framework towards a more quantitative description of the cardiac fiber architecture from tractography results. The proposed approach consists in taking threedimensional fiber tracts as inputs, and then unfolding these fibers in the Euclidean plane under local isometry constraints using semidefinite programming. The solution of the unfolding problem takes the form of a Gram matrix which defines the two-dimensional embedding of the fibers and whose spectrum provides quantitative information on their organization. Experiments on synthetic and real data show that unfolding makes it easier to observe and to study the cardiac fiber architecture. Our conclusion is that two-dimensional embedding of cardiac fibers is a promising approach to supplement three-dimensional rendering for understanding the functioning of the heart.
Authors:
Hongying Li; Marc Robini; Feng Yang; Isabelle Magnin; Yuemin Zhu
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-9-29
Journal Detail:
Title:  IEEE transactions on bio-medical engineering     Volume:  -     ISSN:  1558-2531     ISO Abbreviation:  IEEE Trans Biomed Eng     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-10-7     Completed Date:  -     Revised Date:  2014-10-8    
Medline Journal Info:
Nlm Unique ID:  0012737     Medline TA:  IEEE Trans Biomed Eng     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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