Fig. 1From: Relationship between the geometry patterns of vertebrobasilar artery and atherosclerosisVertebrobasilar configurations. The vertebrobasilar system geometry is qualitatively classified into four basic geometric configurations: Walking (a), Tuning Fork (b), Dominant-Lambda (c), and Hypoplasia-Lambda (d). In each panel, a schematic of the configuration is followed by anterior-posterior magnetic resonance angiographyBack to article page