Uchino Akira, Saito Naoko, Kurita Hiroki, Ishihara Shoichiro
Department of Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan.
Surg Radiol Anat. 2012 Sep;34(7):651-4. doi: 10.1007/s00276-011-0927-2. Epub 2012 Jan 4.
A persistent trigeminal artery (PTA) is the most common carotid-vertebrobasilar anastomosis, usually arising from the cavernous or precavernous segment of the internal carotid artery (ICA) and connecting to the distal basilar artery. There are two types of PTA, lateral and medial. We present the first case of a lateral-type PTA arising from the large arterial ring/fenestration of the cavernous segment of the left ICA with findings from both magnetic resonance angiography and selective catheter angiography.
持续性三叉动脉（PTA）是最常见的颈动脉-椎基底动脉吻合，通常起自颈内动脉（ICA）海绵窦段或海绵窦前段，连接至基底动脉远端。PTA有两种类型，外侧型和内侧型。我们报道首例外侧型PTA，起源于左侧ICA海绵窦段的大动脉环/开窗，并展示了磁共振血管造影和选择性导管血管造影的结果。
