Fig. 2.

A Axial T2-weighted imaging showing communicating hydrocephalus. B Axial T2-weighted imaging demonstrating significant improvement in hydrocephalus following ventriculoperitoneal (V-P) shunting. C, D Axial (C) and sagittal (D) vessel wall MRI revealing intraluminal thrombosis and enhancing vessel wall lesions in the C5 segment. E–G Right common carotid angiogram (E) showing dolichoectasia involving the C1–C5 segments, left common carotid angiogram (F) indicating slight dilation in the C3–C5 segments, and right vertebral angiogram (G) showing normal vertebrobasilar artery morphology. (H) Right common carotid angiogram showing lack of visualization of the distal internal carotid artery after ligation