Table 2.
Brain MRI findings in patients with SIH and PDPH
| Signs | SIH (n = 53) | PDPH (n = 23) | p-value | Interobserver Agreement |
|---|---|---|---|---|
| Qualitative signs | ||||
| Pachymeningeal enhancement | 24 (45.3%) | 6 (26.1%) | 0.134 | 0.692 |
| Venous distention of the lateral sinus | 25 (47.2%) | 9 (39.1%) | 0.618 | 0.601 |
| Subdural fluid collection | 11 (20.8%) | 1 (4.3%) | 0.093 | > 0.99 |
| Angle measurements, midbrain-pons angle, degrees | 48 (39–55) | 50 (40–59) | 0.411 | 0.775 |
| ≥ 40° | 39 (73.6%) | 21 (91.3%) | 0.132 | 0.216 |
| < 40° | 14 (26.4%) | 2 (8.7%) | ||
| vG/SS angle, degrees | 74 (60–84) | 85 (73–97) | 0.020 | 0.843 |
| Size measurements, mm | ||||
| Pituitary height | 7.7 (7.0–8.9) | 7.6 (6.1–8.6) | 0.256 | 0.768 |
| Suprasellar cistern | 4.4 (2.6–5.9) | 4.6 (3.9–5.6) | 0.483 | 0.892 |
| Prepontine cistern | 4.2 (3.1–5.4) | 4.1 (3.5–5.1) | 0.955 | 0.888 |
| Mamillopontine distance | 7.1 (5.6–7.8) | 6.6 (5.8–8.0) | 0.703 | 0.866 |
spontaneous intracranial hypotension (SIH); post-dural puncture headache (PDPH); magnetic resonance imaging (MRI); the angle between the vein of Galen and the straight sinus (vG/SS angle)
Values are presented as the number of patients (%) or median (IQR)