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Abstract #4219

Quantitative 7T MRI for Post-traumatic Osteoarthritis Progression in a Rabbit Model

Rossana Terracciano1,2, Yareli Carcamo-Bahena1, Xiaowei Zou3, Joshua D. Harris4, Bradley Weiner4, John Scott Labis5, Nakul Gupta5, and Carly S. Filgueira1,6
1Nanomedicine, Houston Methodist Research Institute, Houston, TX, United States, 2Electronics and Telecommunications, Politecnico di Torino, Torino, Italy, 3Siemens Medical Solutions USA Inc, Malvern, PA, United States, 4Orthopedic Surgery, Houston Methodist Research Institute, Houston, TX, United States, 5Clinical Radiology, Houston Methodist Research Institute, Houston, TX, United States, 6Cardiovascular Surgery, Houston Methodist Research Institute, Houston, TX, United States

No medical therapies have been shown to halt or slow the progression of post-traumatic osteoarthritis (PTOA), which develops after acute/repetitive injury to a joint. Improvements in non-invasive methods to assess PTOA will help diagnose stages for early clinical interventions. Rabbits offer a translationally relevant animal model where anterior cruciate ligament (ACL) injury allows for monitoring PTOA progression, determining a treatment window for early invention. In this work, we leveraged the high signal-to-noise ratio (SNR) of magnetic resonance imaging at 7T to develop a quantitative, non-invasive, 3D-ultrahigh-resolution dGEMRIC MRI exam for femoral-tibial observations and T1 quantification of matrix changes in rabbits.

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