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Abstract #1447

Multiexponential UTE Relaxation in Achilles Tendon of Ballet Dancers Reveals Matrix Proton Pool Associated with Tendon Shear Stiffness

Anna M Horner1, Felix M Gonzalez2, Courtney N Gleason1, Amanda Blackmon3,4, Emma Faulkner3,5, and David A Reiter1
1Emory University School of Medicine, Atlanta, GA, United States, 2Radiology, AdventHealth, Orlando, FL, United States, 3Atlanta Dance Medicine, Atlanta, GA, United States, 4Physical Therapy, Mercer University, College of Health Professions, Macon, GA, United States, 5Dance, Emory University, Atlanta, GA, United States

Synopsis

Keywords: Tendon/Ligament, Low-Field MRI, UTE MRI, SWE, ballet dancersMulti-echo ultrashort echo time (UTE) MRI provides quantitative structural information on both tendon matrix constituents and water distribution, which influence the mechanical function of tendons. UTE images of professional ballet dancers' Achilles tendons (AT) were combined with Shear Wave Elastography (SWE) Ultrasound (US) measurements of their AT to provide insight on the structure-function. The signal fraction corresponding to the off-resonance relaxation tendon components were found to positively correlate with the long-axis SWE velocity in this dancer cohort.

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