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
Icahn School of Medicine at Mount Sinai, New
York, NY, United States,
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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