论文部分内容阅读
目的分析低灌注脑梗死影像学特点与颅内动脉狭窄的关系。方法 100例低灌注脑梗死患者作为此次研究对象,对所有患者进行影像学特点分析,观察患者影像学特点和颅内动脉狭窄的关系。结果 100例低灌注脑梗死患者中,有53例单侧颅内分水岭病变患者,47例颅内双侧病变患者;多发串珠样病变40例,楔状或其他多发性不规则病变35例,多发多脑叶病变25例,多发点片状病变10例。所有患者均为多发病灶,磁共振成像(MRI)表现为长T1信号,弥散加权成像(DWI)为高信号,表观扩散系数(ADC)为低信号,或偏低信号。部分患者行脑CT灌注成像(CTP)显示,局部血流动力学异常,而侧支循环建立比较好的患者CTP多为阴性。100例低灌注脑梗死患者中,大脑中动脉狭窄35例,颈内脑动脉狭窄30例,椎基底动脉狭窄17例,大脑前或大脑后动脉狭窄10例,无颅内动脉血管狭窄5例,无动脉血管狭窄3例。结论低灌注脑梗死影像学有其特殊性,病因与颅内动脉狭窄密切关联。
Objective To analyze the relationship between imaging characteristics of cerebral infarction and intracranial arterial stenosis after hypoperfusion. Methods 100 patients with hypoperfusion cerebral infarction were selected as the object of this study. Imaging characteristics of all patients were analyzed. The relationship between imaging features and intracranial arterial stenosis was observed. Results Among 100 patients with hypoperfusion cerebral infarction, there were 53 patients with unilateral intracranial watershed lesions and 47 patients with bilateral intracranial lesions. There were 40 cases of multiple beaded lesions, 35 cases of wedge-shaped or other multiple irregular lesions, Cerebral lobe lesions in 25 cases, multiple point patchy lesions in 10 cases. All patients had multiple lesions. MRI showed long T1 signal, DWI high signal and apparent diffusion coefficient low signal or low signal. Some patients underwent brain CT perfusion imaging (CTP) showed abnormal hemodynamics, whereas patients with well established collateral circulation had mostly negative CTPs. Among the 100 patients with hypoperfusion cerebral infarction, 35 were middle cerebral artery stenosis, 30 were intracranial cerebral artery stenosis, 17 were vertebrobasilar stenosis, 10 were anterior cerebral or posterior cerebral artery stenosis, 5 were without intracranial arterial stenosis, No arterial stenosis in 3 cases. Conclusion Low perfusion imaging of cerebral infarction has its own particularity, the etiology is closely related to intracranial arterial stenosis.