Fig. 2

Reconstructed three-dimensional computed tomography angiography and venography. a, b Three-dimensional reconstructed images, showing the vertebral artery and PICA (red), distal posterior inferior cerebellar artery aneurysm(DPICAAn) (arrow), one feeder from the right PICA of the AVM (yellow), and nidus–drainers–transverse sinus (blue)