Diagnostic ability of MR imaging criteria for ENS
| MR Imaging Findings | Diagnostic Ability (%) | ||||
|---|---|---|---|---|---|
| Sensitivity | Specificity | Accuracy | PPV | NPV | |
| Flare sign (fsT2WI) | 77 | 93 | 88 | 83 | 90 |
| Shaggy margin (CET1WI) | 65 | 99 | 89 | 86 | 86 |
| Short-axis diameter | |||||
| 15 mm | 93 | 66 | 75 | 61 | 94 |
| 16 mm | 80 | 85 | 84 | 76 | 88 |
| 17 mm | 78 | 84 | 81 | 74 | 87 |
Note:—fsT2WI indicates fat-suppressed T2-weighted imaging; CET1WI, gadolinium-enhanced T1-weighted imaging; PPV, positive predictive value; NPV, negative predictive value.