Fig. 4From: Angiographic analysis on posterior fossa hemorrhages and vascular malformations beyond aneurysms by CT angiography and digital subtraction angiographyDural arteriovenous fistula (dAVF); a Axial MIP image showing the calcifications in torcula and increased vascular channels within the left transverse sinus, b DSA image in lateral view of the same patient showing dAVF (Type 1) in the torcular region (white arrow) with feeders from occipital artery (yellow arrow)Back to article page