Skip to main content

Table 2 Brain MRI findings in patients with SIH and PDPH

From: Comparisons of clinical characteristics, brain MRI findings, and responses to epidural blood patch between spontaneous intracranial hypotension and post-dural puncture headache: retrospective study

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
  1. 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)
  2. Values are presented as the number of patients (%) or median (IQR)