Figure 1
Axial magnetic resonance imaging of the cerebellum with T2‑weighted images (left) and T2*‑weighted images (right). On the left image, notice the edema surrounding the lesion in the right cerebellum with mass effect on the fourth ventricle. Visualization of hemosiderin (dark rim) due to prior hemorrhage on both, although more pronounced on the T2* sequence.
Figure 2
Sagittal magnetic resonance imaging of the brain with T1 images after contrast (left) and sagittal CT imaging of the brain after intravenous contrast (right). Notice the arterial collaterals in the cerebellum (thin arrow) and early enhancement of the inferior vermian vein (thick arrow) suggesting an arteriovenous fistula.
Figure 3
Pre‑procedural DSA images of the AVF with enhancement of V3 segments of the right vertebral artery (A) and posterior meningeal artery (B) with drainage in the right inferior vermian vein (C), confirming the dAVF. Additionally enhancing: posterior inferior cerebellar artery (D), basilar artery (E).
Figure 4
Six‑month post‑embolization DSA (right vertebral injection) shows normal opacification of the right vertebral artery (A), posterior inferior cerebellar artery (B), and basilar artery (D). No residual filling of the treated dural arteriovenous fistula in region C, confirming complete occlusion.