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Abstract #2759

Diffusion-weighted MRI-based Virtual Elastography in liver: Enhancement prospect through diffusion image registration

Valentin H. Prevost1, Julien Rouyer2, Wolter de Graaf3, and Bruno Triaire1
1Canon Medical Systems Corporation, Tochigi, Japan, 2Department of Research & Innovation, Olea Medical, La Ciotat, France, 3Canon Medical Systems Europe, Zoetermeer, Netherlands

Diffusion-weighted based virtual elastography is a new approach proposing for liver elasticity assessment without the use of additional equipment. As abdominal imaging is challenging in a clinical context, this work investigated the potential of a respiratory triggered implementation with a dedicated image registration pipeline. Results analysis concluded to a signal-to-noise ratio increase, an organ delineation improvement, an overall signal dispersion reduction in liver and equal results for registered images using only two averages compared to six averages without registration. This dedicated postprocessing appears to enhance the liver elasticity assessment accuracy, with scan times that are feasible in a clinical context.

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