The azygos anterior cerebral artery (azygos ACA) is a rare arterial variant characterized by an absent anterior communicating artery with the two ACAs joined in their proximal segments (horizontal ...

This study evaluated anatomical variants in the carotid siphon and of the circle of Willis in patients with aneurysms. We performed a retrospective analysis of cerebral angiographies. The Control ...

The anastomosis in our patient appears to be a typical occipital knot, the persistent potential connection between the occipital artery and C1 vertebral artery posterior and superior to the posterior ...

Several studies have focused on the anterior communicating artery due to its frequent occurrence and rupture of aneurysms in this location, hypothesizing that the inequality in bilateral A1 is linked ...

The thalamus is divided into four major vascular territories. These are the anterior, inferolateral, paramedian and posterior territories, determined by their arterial blood supply (figure 3). 4 13–15 ...

Each of the right coronary artery branches has a different role to play, from helping keep the heart beating to pumping blood to the lungs. Learn more.

Aneurysms in anterior communicating artery complex and vertebral-basilar arterial segments were seen in 27 and 8 patients, respectively, while they were not detected in parts of posterior cerebral ...