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Abstract #2966

T2 mapping of normal and abnormal cartilage in the equine distal interphalangeal joint using low field MRI

Melissa E Baker1, Lucy E Kershaw2, Steve Roberts3, Richard Reardon1, Sionagh Smith1, and Sarah E Taylor1
1Royal (Dick) School of Veterinary Studies and The Roslin Institute, The University of Edinburgh, Edinburgh, United Kingdom, 2Centre for Cardiovascular sciences and Edinburgh Imaging, The University of Edinburgh, Edinburgh, United Kingdom, 3Hallmark Veterinary Imaging Ltd, Guildford, United Kingdom

Osteoarthritis is a common source of pain and lameness in horses of all ages. There are currently no diagnostic tests available to detect early cartilage lesions. A T2 mapping sequence was used on a low field 0.27 T open MR system to image the cartilage of 20 ex vivo equine distal interphalangeal joints. Results showed significantly increased mean T2 relaxation time 114±95 ms in lateral cartilage (higher OARSI grades) compared to 71±21 ms in medial cartilage (lower OARSI grades). This quantitative MRI technique could be used to diagnose early pathology in equine joints in the future.

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