New approach for analyzing magnetic resonance elastography images

Ingolf Sack; Gerd Buntkowsky; Johannes Bernarding; Thomas Tolxdorff; Juergen Braun

doi:10.1117/12.430915

28 June 2001 New approach for analyzing magnetic resonance elastography images

Ingolf Sack, Gerd Buntkowsky, Johannes Bernarding, Thomas Tolxdorff, Juergen Braun

Proceedings Volume 4320, Medical Imaging 2001: Physics of Medical Imaging; (2001) https://doi.org/10.1117/12.430915
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

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.

Citation Download Citation

Ingolf Sack, Gerd Buntkowsky, Johannes Bernarding, Thomas Tolxdorff, and Juergen Braun "New approach for analyzing magnetic resonance elastography images", Proc. SPIE 4320, Medical Imaging 2001: Physics of Medical Imaging, (28 June 2001); https://doi.org/10.1117/12.430915

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