A new methodology for multiscale myocardial deformation and strain analysis based on tagging MRI

Luc Florack, Hans C. van Assen

Research output: Contribution to journalArticleAcademicpeer-review

13 Citations (Scopus)
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Abstract

Myocardial deformation and strain can be investigated using suitably encoded cine MRI that admits disambiguation of material motion. Practical limitations currently restrict the analysis to in-plane motion in cross-sections of the heart (2D+time), but the proposed method readily generalizes to 3D+time. We propose a new, promising methodology, which departs from a multiscale algorithm that exploits local scale selection so as to obtain a robust estimate for the velocity gradient tensor field. Time evolution of the deformation tensor is governed by a first order ordinary differential equation, which is completely determined by this velocity gradient tensor field. We solve this matrix-ODE analytically, and present results obtained from healthy volunteers as well as from patient data. The proposed method requires only off-the-shelf algorithms and is readily applicable to planar or volumetric tagging MRI sampled on arbitrary coordinate grids.
Original languageEnglish
Article number341242
Number of pages8
JournalInternational Journal of Biomedical Imaging
Volume2010
DOIs
Publication statusPublished - 2010

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