Fig. 4
From: Vessel diameters of 14 basal cerebral arteries assessed in 1000 digital subtraction angiographies
Assessment of the anterior communicating artery, injected from the right side. The caliper is placed medially to both A2 sections and angled until parallel lining of its branches with the adjacent vessel walls is achieved. DSA, ap-projection, the diameter reads 1.39 mm.
