Lateral tentorial artery

The lateral tentorial artery also known as lateral tentorial arcade, is a branch of the meningohypophyseal trunk (MHT) which arises from the cavernous segment of the internal carotid artery. The lateral tentorial artery runs along the lateral edge of the tentorium cerebelli.

Radiographic appearance

Due to its small size, the branches of the MHT are poorly visualized on angiography in the absence of pathologically increased blood flow, e.g. in tentorial tumors or tentorial dural arteriovenous fistula (DAVF).

When seen on frontal projections the artery shows a straight course towards the sigmoid sinus, and on lateral projections it points in downward direction (differentiating it from the Artery of Bernasconi and Cassinari which shows an upward pointing direction).