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Abstract #1101

Reproducibility of Magnetic Resonance T1ρ & T2 Relaxation Time & Morphological Measurements of Articular Hip Cartilage at 3T

Alexander Balcar Dillon1, Gabby Blumenkrantz Joseph1, Xiaojuan Li1, Thomas M. Link1, Sharmila Majumdar1

1Radiology and Biomedical Imaging, UCSF, San Francisco, CA, United States

We evaluated the reproducibility of cartilage thickness, volume, T and T2 relaxation times, and alpha angle measurements in the hip joint using magnetic resonance (MR) imaging at 3 T. The coefficients of variation for these measurements ranged from 0.3-4.7%, indicating their high level of intra-observer reproducibility and the feasibility of monitoring the morphology and biochemical composition (via relaxometry) of articular hip cartilage with these MR techniques.