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目的探讨后循环供血区缺血性脑卒中(PCIS)患者的椎动脉、基底动脉血管形态的影像学改变。方法回顾分析2012年1月~2016年2月136例PCIS患者的MRI、CTA影像学资料,总结该类患者血管形态学改变的影像学特点,同期前循环缺血性脑卒中127例为对照组。结果 (1)PCIS组136例血管形态改变者128例,占94.12%,其中扭曲45例(33.09%),狭窄35例(25.74%),纤细23例(16.91%),闭塞13例(9.56%),异常粗大7例(5.15%);非PCIS组127例,血管形态改变者46例(36.22%),其中狭窄17例,扭曲、纤细等29例;(2)2组血管形态异常发生率比较有明显差异(P<0.01)。结论 PCIS患者椎动脉、基底动脉血管形态存在异常改变。椎、基底动脉扭曲、发育纤细、粗大等和狭窄性病变的血管形态改变可能均为PCIS的重要危险因素之一。
Objective To investigate the imaging changes of vertebral artery and basilar artery in patients with posterior circulation ischemic stroke (PCIS). Methods The MRI and CTA imaging data of 136 PCIS patients from January 2012 to February 2016 were retrospectively analyzed. The imaging characteristics of the vascular morphological changes in these patients were summarized. The same period, 127 cases of ischemic stroke in the anterior circulation were the control group . Results Among the 136 patients with PCIS, 128 (94.12%) had morphological changes of blood vessels, including 45 cases (33.09%) with stenosis, 35 cases (25.74%) stenosis, 23 cases slender (16.91%) and 13 cases (9.56% ), Abnormally thick in 7 cases (5.15%); non-PCIS group 127 cases, 46 cases (36.22%) of vascular changes in morphology, including 17 cases of stenosis, slenderness and slenderness; (2) There was a significant difference (P <0.01). Conclusion There are abnormal changes in the morphology of vertebral artery and basilar artery in patients with PCIS. Vertebral, basilar artery distortion, slender development, stenosis and vascular changes in vascular morphology may be one of the important risk factors for PCIS.