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Proceedings Paper

New approach for analyzing magnetic resonance elastography images
Author(s): Ingolf Sack; Gerd Buntkowsky; Johannes Bernarding; Thomas Tolxdorff; Juergen Braun
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Paper Abstract

A new method for evaluating Magnetic Resonance Elastography (MRE) wave images is introduced, which consists of both local frequency estimation (LFE) and simulation of wave patterns by a coupled harmonic oscillator (CHO) approach. It is shown that i) LFE performs improved reconstruction by use of Gauss filters and ii) CHO calculations can help to refine the resulting wave speed or elasticity map by taking local attenuation, reflection, and diffraction into account. The performance of new LFE and CHO calculations is demonstrated by MRE experiments on a gel phantom as well as by simulations of shear waves in a brain phantom, such as for potential in-vivo MRE-experiments.

Paper Details

Date Published: 28 June 2001
PDF: 7 pages
Proc. SPIE 4320, Medical Imaging 2001: Physics of Medical Imaging, (28 June 2001); doi: 10.1117/12.430915
Show Author Affiliations
Ingolf Sack, Univ. Hospital Benjamin Franklin/Free Univ. of Berlin (Germany)
Gerd Buntkowsky, Free Univ. of Berlin (Germany)
Johannes Bernarding, Univ. Hospital Benjamin Franklin/Free Univ. of Berlin (Germany)
Thomas Tolxdorff, Univ. Hospital Benjamin Franklin/Free Univ. of Berlin (Germany)
Juergen Braun, Univ. Hospital Benjamin Franklin/Free Univ. of Berlin (Germany)


Published in SPIE Proceedings Vol. 4320:
Medical Imaging 2001: Physics of Medical Imaging
Larry E. Antonuk; Martin Joel Yaffe, Editor(s)

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