Department of Radiology, Liaocheng People's Hospital and Liaocheng Clinical School of Taishan Medical University, Liaocheng, Shandong, PR China.
Clin Radiol. 2013 Nov;68(11):e578-85. doi: 10.1016/j.crad.2013.05.099. Epub 2013 Jul 8.
To report the prevalence and characteristic features of persistent trigeminal artery (PTA), PTA variant (PTAV), and other variants of the head and neck vessels, identified using magnetic resonance angiography (MRA).
The three-dimensional (3D) time of flight (TOF) MRA and 3D contrast-enhanced (CE) MRA images of 6095 consecutive patients who underwent 3 T MRA at Liaocheng People's Hospital from 1 September 2008 through 31 May 2012 were retrospectively reviewed and analysed. Thirty-two patients were excluded because of suboptimal image quality or internal carotid artery (ICA) occlusion.
The prevalence of both PTA and PTAV was 0.63% (PTA, 26 cases; PTAV, 12 cases). The prevalence of coexisting variants of the head and neck vessels in cases of PTA/PTAV was 52.6% (20 of 38 cases). The vascular variants that coexisted with cases of PTA/PTAV were as follows: the intracranial arteries varied in 10 cases, the origin of the supra-aortic arteries varied in nine cases, the vertebral artery (VA) varied in 14 cases, and six cases displayed fenestrations. Fifteen of the 20 cases contained more than two types of variants.
The prevalence of both PTA and PTAV was 0.63%. Although PTA and PTAV are rare vascular variants, they frequently coexist with other variants of the head and neck vessels. Multiple vascular variations can coexist in a single patient. Recognizing PTA, PTAV, and other variants of the head and neck vessels is crucial when planning a neuroradiological intervention or surgery. Recognizing the medial PTA is very important in clinical practice when performing trans-sphenoidal surgery on the pituitary as failure to do so could result in massive haemorrhage.
报告使用磁共振血管造影（MRA）发现的持续性三叉动脉（PTA）、PTA 变异型（PTAV）和头颈部血管其他变异型的流行率和特征。
回顾性分析 2008 年 9 月 1 日至 2012 年 5 月 31 日在聊城市人民医院进行 3T MRA 的 6095 例连续患者的三维（3D）时间飞跃（TOF）MRA 和 3D 对比增强（CE）MRA 图像。由于图像质量不佳或颈内动脉（ICA）闭塞，32 例患者被排除在外。
PTA 和 PTAV 的总患病率为 0.63%（PTA 26 例；PTAV 12 例）。PTA/PTAV 病例中同时存在头颈部血管变异的患病率为 52.6%（38 例中有 20 例）。与 PTA/PTAV 病例同时存在的血管变异如下：颅内动脉变异 10 例，锁骨下动脉起源变异 9 例，椎动脉（VA）变异 14 例，6 例存在窗式变异。20 例中有 15 例包含两种以上类型的变异。
PTA 和 PTAV 的总患病率为 0.63%。尽管 PTA 和 PTAV 是罕见的血管变异，但它们常与头颈部血管的其他变异同时存在。单一患者可同时存在多种血管变异。在计划神经放射学介入或手术时，识别 PTA、PTAV 和头颈部血管的其他变异非常重要。在对垂体进行经蝶窦手术时，识别内侧 PTA 非常重要，否则可能导致大出血。
