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-Gia^1,3, 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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