Comparisons of the imaging features of the lesion margins on SWI between abscesses and glioblastomas
| Features | Abscess | GB | P Value | SEN | SPE | Accuracy | PPV | NPV |
|---|---|---|---|---|---|---|---|---|
| Hypointense rim | ||||||||
| Prevalence | 0.059 | |||||||
| Absent | 0 | 5 | ||||||
| Present | 12 | 15 | ||||||
| Border | <.001 | 91.7 | 86.7 | 88.9 | 84.6 | 92.9 | ||
| Incomplete | 1 | 13 | ||||||
| Completea | 11 | 2 | ||||||
| Contour | <.001 | 75.0 | 86.7 | 81.5 | 81.8 | 81.3 | ||
| Smootha | 9 | 2 | ||||||
| Irregular | 3 | 13 | ||||||
| Locationb | <.001 | 91.7 | 86.7 | 88.9 | 84.6 | 92.9 | ||
| Inner | 0 | 9 | ||||||
| Samea | 11 | 2 | ||||||
| Inner + Same | 1 | 4 | ||||||
| Dual rim sign | <.001 | 75.0 | 100 | 90.6 | 100 | 87.0 | ||
| Absent | 3 | 20 | ||||||
| Presenta | 9 | 0 |