Initial diagnosis of DAVFs on MR and MRA
| Presence of DAVF | Side of DAVF | Venous Segment of DAVF | ||||
|---|---|---|---|---|---|---|
| Reader 1 | Reader 2 | Reader 1 | Reader 2 | Reader 1 | Reader 2 | |
| T2-weighted MR (n = 9) | 56% (21%–86%) | 56% (21%–86%) | 80% (28%–99%) | 80% (28%–99%) | N/A | N/A |
| 3D TOF MRA (n = 8*) | 88% (47%–100%) | 88% (47%–100%) | 100% (65%–100%) | 86% (42%–100%) | 43% (10%–82%) | 57% (18%–90%) |
| TR 3D MRA (n = 9) | 100% (72%–100%) | 100% (72%–100%) | 100% (72%–100%) | 100% (72%–100%) | 78% (40%–97%) | 89% (52%–100%) |
Note:—DAVF indicates dural arteriovenous fistula; MRA, MR angiography. Data are presented as percentage of correct detection with 95% CIs in parentheses. If signs suggestive of a DAVF were not encountered on an examination it was subsequently excluded from the location analysis.
* One examination was excluded because the fistulous point was located outside the scanned region.