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Abstract #0333

Multi-vendor Phantom and Intra-individual Comparison of Liver Stiffness Using Various MR Elastography Sequences at 1.5T & 3T

Justin Yu1, Anshuman Panda1, Kelly Tung-Smith1, Robert Nelson2, Akira Kawashima1, Ming Yang1, Chen Lin3, Aiden McGirr1, Sophia Fasani1, Kristina Flicek1, Sukhdeep Singh1, and Alvin Silva1
1Radiology, Mayo Clinic Arizona, Phoenix, AZ, United States, 2National Institutes of Health, Phoenix, AZ, United States, 3Mayo Clinic Florida, Jacksonville, FL, United States

The variability of stiffness data from GRE and SE EPI MRE sequences is tested on phantoms and in-vivo on 1.5T and 3T MRI scanners from two vendors. Large variability was observed in the phantom measurements for the GRE and EPI sequences on one of the vendor’s scanner, ranging from 20-33% difference. Stiffness measurements were very similar (within 10%) between sequences on the other vendor’s scanner. Similar results were found in several clinical subjects who had GRE and SE EPI sequences performed.

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