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Abstract #4435

Quantitative evaluation of tendon enthesis using ultrashort echo time magnetic resonance imaging (UTE-MRI) techniques

Saeed Jerban1, Alecio Lombardi1, Yajun Ma1, Amir M Afsahi1, Dina Moazamian1, Jiyo Athertya1, Hyungseok Jang1, Christine B Chung1, Jiang Du1, and Eric Y Chang1,2
1Department of Radiology, University of California, San Diego, San Diego, CA, United States, 2Radiology Service, VA San Diego Healthcare System, San Diego, CA, United States


Entheses are transition zones connecting flexible tissues such as tendons and ligaments to bone. Conventional MRI sequences detect little or no signal from entheses as a result of their short T2* values. Alternatively, ultrashort echo time MRI (UTE-MRI) with TE<50 μs can be used to image tissues with short T2 and T2* for quantitative assessment. The feasibility of using quantitative UTE-MRI techniques for the evaluation of entheses regions of Achilles tendons in cadaveric ankle specimens was investigated. Using 20 cadaveric ankle specimens, high quality images were obtained with significant entheses signal which enabled excellent UTE-T1, UTE-Adiab-T1r, and UTE-MT model fittings.

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