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Abstract #0753

A Quantitative Investigation of the Fatty Degeneration of the Supraspinatus Muscle after Rotator Cuff Tear: SPLASH-MRI, Model-Based T$$$_1$$$ Mapping and Shear Wave Ultrasound

Andreas Max Weng1, Fabian Gilbert2, Johannes Tran-Gia1,3, Tobias Wech1, Detlef Klein1, Thorsten Alexander Bley1, and Herbert Köstler1

1Department of Diagnostic and Interventional Radiology, University of Würzburg, Würzburg, Germany, 2Department of Trauma, Hand, Plastic and Reconstructive Surgery, University of Würzburg, Würzburg, Germany, 3Department of Nuclear Medicine, University of Würzburg, Würzburg, Germany

Fatty degeneration of the rotator cuff is often investigated by a visual inspection of T$$$_1$$$-weighted MR images. Since this approach is in debate the aim of this study was to investigate fatty degeneration of the supraspinatus muscle by quantitative techniques: SPLASH, model-based acceleration for parameter mapping (MAP) T$$$_1$$$ measurement and shear wave ultrasound. The obtained values from SPLASH and T$$$_1$$$ mapping are in good accordance (Pearson’s r=0.82). However, shear wave ultrasound does neither correlate well with SPLASH (Spearman’s rho= 0.30) nor with MAP (rho=0.19). Since data acquisition time of the T$$$_1$$$ mapping technique used in our study is very short (4s), this might be the technique of choice for investigation of the fatty degeneration of the supraspinatus after rotator cuff tear.

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