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Abstract #4067

MR Elastography of the liver: qualitative and quantitative comparison of GRE and EPI sequences.

Temel Kaya Yasar 1 , Cecilia Besa 1 , Jad Bou Ayache 1 , Octavia Bane 1 , Maggie Fung 2 , and Bachir Taouli 1

1 Icahn School of Medicine at Mount Sinai, New York, NY, United States, 2 GE Healthcare, New York, NY, United States

GRE based MRE pulse sequences are commonly used for liver studies. However, SE-EPI based MRE pulse sequences are attractive due to shorter acquisition time and higher SNR. However, clinical evidence whether EPI is equivalent to GRE-MRE remains to be proven. In this study, we compared liver stiffness using GRE and EPI MRE in 9 patients. In parallel to stiffness measurements two radiologist assessed the quality MRE from wave images and confidence maps. While excellent agreement was found between methods, EPI-MRE was found to be of higher quality while significantly shorter in acquisition time.

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