Table 1.
Summary of diagnostic performance of the various qualitative imaging features
| Outline | DSA | Total | Presence on adjacent or parallel margins | DSA | Total | ||
|---|---|---|---|---|---|---|---|
| UBOS | VI | UBOS | VI | ||||
| Ill defined | 20 | 4 | 24 | Present | 16 | 1 | 17 |
| Well defined | 12 | 18 | 30 | Absent | 16 | 21 | 37 |
| Total | 32 | 22 | 54 | Total | 32 | 22 | 54 |
| Normal adjacent parenchyma | DSA | Total | String of beads appearance | DSA | Total | ||
| UBOS | VI | UBOS | VI | ||||
| Present | 27 | 5 | 32 | Present | 21 | 3 | 24 |
| Absent | 5 | 17 | 22 | Absent | 11 | 19 | 30 |
| Total | 32 | 22 | 54 | Total | 32 | 22 | 54 |
DSA, digital subtraction angiography; UBOS, unidentified bright objects of spleen group (normal DSA); VI, vascular injury group (pseudoaneurysm or active extravasation on DSA).