Diagnostic accuracy of quantitative and qualitative (visual) assessments
Sensitivity | Specificity | PPV | NPV | AUC (95% CI) | Diagnostic Accuracy | Cutoff | |
---|---|---|---|---|---|---|---|
Quantitative measurements | |||||||
3T NM signal | 0.88 | 0.8 | 0.88 | 0.8 | 0.88 (0.79–0.97) | 0.86 | 110.35 |
Volume | 1 | 0.72 | 0.86 | 1 | 0.86 (0.76–0.95) | 0.89 | 200.02 |
7T T2*WI volume | 0.65 | 0.72 | 0.82 | 0.54 | 0.69 (0.53–0.84) | 0.68 | 498.70 |
Diffusion measures | |||||||
FA 3T NM | 0.75 | 0.53 | 0.75 | 0.55 | 0.68 (0.54–0.82) | 0.68 | 0.33 |
3T T2WI | 0.65 | 0.70 | 0.8 | 0.52 | 0.64 (0.5–0.79) | 0.66 | 0.37 |
AD 3T NM | 0.7 | 0.65 | 0.78 | 0.54 | 0.73 (0.59–0.87) | 0.68 | 0.64 |
3T T2WI | 0.61 | 0.75 | 0.81 | 0.52 | 0.65 (0.49–0.80) | 0.66 | 0.5 |
RD 3T NM | 0.64 | 0.75 | 0.82 | 0.54 | 0.72 (0.58–0.86) | 0.67 | 0.43 |
3T T2WI | 0.72 | 0.6 | 0.76 | 0.55 | 0.68 (0.52–0.83) | 0.67 | 0.29 |
MD 3T NM | 0.67 | 0.75 | 0.83 | 0.56 | 0.72 (0.58–0.87) | 0.7 | 0.51 |
3T T2WI | 0.64 | 0.75 | 0.82 | 0.54 | 0.67 (0.53–0.82) | 0.67 | 0.38 |
Combined measurements | |||||||
NM signal and volume + FA (3T NM) | 0.92 | 0.95 | 0.97 | 0.86 | 0.96 (0.9–1) | 0.93 | 4.4 |
Qualitative evaluation | |||||||
NM at 3T | 0.83 | 0.9 | 0.94 | 0.9 | – | 0.86 | – |
DNH at 7T | |||||||
Method 1 | 0.97 | 0.8 | 0.9 | 0.94 | – | 0.91 | – |
Method 2 | 0.94 | 0.85 | 0.92 | 0.9 | – | 0.91 | – |
Note:—AUC indicates area under the curve; NPV, negative predictive value; PPV, positive predictive value.