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Table 2 The diagnostic parameters of US and MRI for the diagnosis of partial-thickness (PTT) and full-thickness (FTT) rotator cuff tears

From: Detection of rotator cuff tears: the value of MRI following ultrasound

  Ultrasound Magnetic resonance imaging**
PTT FTT PTT FTT
Sensitivity 8/9 21/22 6/9 22/22
89%* [52%-100%] 95% [77%-100%] 67% [30%-93%] 100% [85%-100%]
Specificity 47/59 43/46 51/59 42/46
80% [67%-89%] 93% [82%-99%] 86% [75%-94%] 91% [79%-98%]
Accuracy 55/68 64/68 57/68 64/68
81% [70%-89%] 94% [86%-98%] 84% [73%-92%] 94% [86%-98%]
PPV 8/20 21/24 6/14 22/26
40% [19%-64%] 88 [68%-97%] 43% [18%-71%] 85% [65%-96%]
NPV 47/48 43/44 51/54 42/42
98% [89%-100%] 98% [88%-100%] 94% [85%-99%] 100% [92%-100%]
  1. *The 95% confidence interval is given between brackets
  2. **MRI and MR arthrography
  3. PPV: positive predictive value (PPV), NPV: negative predictive value (NPV), PTT: partial-thickness rotator cuff tears, FTT: full-thickness rotator cuff tears