Keywords: Elastography, Low-Field MRI, elastography, midfield MRI, 0.55T, liver
Motivation: Mid and low field MRI systems provide opportunities for lower cost MRI and larger bore size. MR elastography (MRE) would be an attractive capability for such systems.
Goal(s): Demonstrate the feasibility of MRE at 0.55T using both spin echo and gradient echo approaches.
Approach: 15 patients with known or suspected chronic liver disease received MRE at 0.55T using both GRE and SE-EPI derived measurements. Stiffness and measured ROI size were compared between approaches.
Results: High quality diagnostic MRE images were obtained in all patients, with good agreement in stiffness measured for GRE and SE approaches.
Impact: High-quality MRE acquisitions have been shown to be possible at 0.55T. MRE at lower fields and larger bore size is feasible, which will help make this technology accessible to a larger range of patients who need it.
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