Abstract #1545

Knee dGEMRIC at 7 T: Validation against 1.5 T and comparison of T1 mapping methods

Pernilla Peterson¹, Emma Olsson¹, Lars E. Olsson¹, Carl Johan Tiderius², and Jonas Svensson³

¹Dept. of Translational Medicine, Lund University, Malmö, Sweden, ²Dept. of Orthopedics, Skåne University Hospital, Lund, Sweden, ³Dept. of Medical Imaging and Physiology, Skåne University Hospital, Lund, Sweden

dGEMRIC (delayed Gadolinium Enhanced Magnetic Resonance Imaging of Cartilage) is a well-established technique for cartilage quality assessment in osteoarthritis at 1.5 T. The aim of this study was to establish dGEMRIC at 7 T by validation against 1.5 T and comparison of three T1 mapping methods: inversion recovery, variable flip angle and look locker. Both healthy volunteers and patients with early signs of osteoarthritis were scanned at both field strengths postcontrast. We conclude that dGEMRIC is feasible at 7 T and that inversion recovery is the preferred T1 mapping approach at 7 T.

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