3D displacement field reconstruction on an irregular domain from planar tagged cardiac MR images

Thomas S. Denney, Jerry L. Prince

Research output: Contribution to conferencePaper

Abstract

An important application of deformable motion estimation theory is the estimation of heart motion from tagged MR image sequences. In MR tagged images, the heart appears with a spatially encoded pattern that moves with the tissue. The position of the pattern in each frame of the image sequence can be used to obtain sparse measurements of the heart's 3D displacement field. In this paper, we propose a method for estimating a dense displacement field from sparse displacement measurements that is based on a multidimensional stochastic model for the smoothness and divergence of the displacement field and uses the Fisher estimation framework. The main feature of this method is that the displacement field model and the resulting estimate equation are defined only on the irregular domain of the myocardium. Simulation results are presented that demonstrate the accuracy of our method and show the effect of the tag pattern on the estimation error.

Original languageEnglish (US)
Pages172-177
Number of pages6
StatePublished - Dec 1 1994
EventProceedings of the Workshop on Motion of Non-Rigid and Articulated Objects - Austin, TX, USA
Duration: Nov 11 1994Nov 12 1994

Other

OtherProceedings of the Workshop on Motion of Non-Rigid and Articulated Objects
CityAustin, TX, USA
Period11/11/9411/12/94

ASJC Scopus subject areas

  • Engineering(all)

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    Denney, T. S., & Prince, J. L. (1994). 3D displacement field reconstruction on an irregular domain from planar tagged cardiac MR images. 172-177. Paper presented at Proceedings of the Workshop on Motion of Non-Rigid and Articulated Objects, Austin, TX, USA, .