Distribution of 433 focal filling defects within the dural sinuses on the 3D contrast-enhanced MPRAGE images of 90 cases (100 participants)
| Defect Location | No. of Defects | % of Total |
|---|---|---|
| Superior sagittal sinus | 233 | 53.8 |
| Anterior and superior portion | 227 | 53.7 |
| Posterior portion | 6 | 0.2 |
| Right transverse sinus | 48 | 11.0 |
| Midlateral portion and transverse/sigmoid junction | 41 | 9.5 |
| Medial portion | 7 | 1.6 |
| Left transverse sinus | 74 | 17.1 |
| Midlateral portion and transverse/sigmoid junction | 71 | 16.4 |
| Medial portion | 3 | 0.7 |
| Straight sinus | 76 | 17.6 |
| Junction point with vein of Galen | 29 | 6.7 |
| Inferior third portion | 46 | 10.6 |
| Superior portion | 1 | 0.2 |
| Vein of Galen | 2 | 0.5 |