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Table 1 Summary of Goutallier grading results in the tested population

From: Threshold-based quantification of fatty degeneration in the supraspinatus muscle on MRI as an alternative method to Goutallier classification and single-voxel MR spectroscopy

 Grade 0
(no fat)
Grade 1
(fatty streaks)
Grade 2
(fat < muscle)
Grade 3
(fat = muscle)
Grade 4
(fat > muscle)