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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