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【目的】分析Percheron动脉(artery of Percheron,AOP)闭塞的影像学特点。【方法】回顾性分析2010年7月至2014年5月本院收治的12例 AOP闭塞患者的临床及影像学资料。全部患者均在发病72 h内完成颅脑CT及磁共振成像(MRI)检查,对于影像学提示双侧丘脑腹内侧新发梗死伴或不伴有中脑梗死的患者,进一步完善磁共振血管成像(Magnetic Renounce Angiography,MRA)检查。【结果】AOP患者意识障碍(100%)、垂直性眼肌麻痹(75%)及记忆力减退(66.7%)为最常见的神经系统表现。12例患者 MRI 显示：8例(66.7%)为双侧丘脑腹内侧伴有中脑“V”形梗死,3例(25.0%)为双侧丘脑腹内侧梗死,1例(8.3%)为双侧丘脑腹内侧伴一侧丘脑前部梗死；影像学表现：病变部位液体反转恢复成像(fluid-attenuated inversion recov-ery,FLAIR)及弥散加权成像(diffusion-weighted imaging,DWI)高信号,MRA 提示 AOP 闭塞。【结论】AOP影像学表现为双侧丘脑腹内侧梗死,伴或不伴有脑干梗死,早期诊断并积极治疗预后良好。“,”Obj ective]To analyze the imaging characteristics of occlusion of artery of Percheron (AOP).[Methods]Imaging and clinical data of 12 patients with AOP infarction from July 2010 to May 2014 in the hospital were reviewed retrospectively.All patients underwent brain CT and MRI imaging within 72 hours.Pa-tients suggested by the imaging studies as new bilateral medial thalamic infarction with or without midbrain in-farction continued to receive Magnetic Renounce Angiography(MRA).[Results]Disturbance of consciousness (100%),vertical ophthalmoplegia (75%)and memory loss (66.7%)were the most common neurological manifestations.The results of MRI of 12 patients showed that:8 cases (66.7%)paramedian thalami with ros-tral midbrain“V”shape infarction,3 (25.0%)paramedian thalami infarction,1 (8.3%)paramedian thalami with anterior thalami infarction.Imaging feature:high signal in fluid-attenuated inversion recovery (FLAIR) and diffusion-weighted imaging (DWI),AOP occlusion in MRA.[Conclusion]The imaging manifestation of AOP are bilateral paramedian thalami with or without rostral midbrain infarction;The prognosis is good by early diagnosed and aggressively treated.