Thirty-four patients with cerebral infarction and 18 patients with transient ischemic attack were examined by multi-slice spiral CT scan, CT perfusion imaging, and CT angiography within 6 hours after onset. By CT perf...Thirty-four patients with cerebral infarction and 18 patients with transient ischemic attack were examined by multi-slice spiral CT scan, CT perfusion imaging, and CT angiography within 6 hours after onset. By CT perfusion imaging, 29 cases in the cerebral infarction group and 10 cases in the transient ischemic attack group presented with abnormal blood flow perfusion, which corresponded to the clinical symptoms. By CT angiography, various degrees of vascular stenosis could be detected in 41 patients, including 33 in the cerebral infarction group and eight in the transient ischemic attack group. The incidence of intracranial artery stenosis was higher than that of extracranial artery stenosis. The intracranial artery stenosis was located predominantly in the middle cerebral artery and carotid artery siphon, while the extracranial artery stenosis occurred mainly in the bifurcation of the common carotid artery and the opening of the vertebral artery. There were 34 cases （83%） with convict vascular stenosis and perfusion abnormalities, and five cases （45%） with perfusion abnormalities but without convict vascular stenosis. The incidence of cerebral infarction in patients with National Institutes of Health Stroke Scale scores 〉 5 points during onset was significantly higher than that in patients with National Institutes of Health Stroke Scale scores 〈 5 points. These experimental findings indicate that the combined application of various CT imaging methods allows early diagnosis of acute ischemic cerebrovascular disease, which can comprehensively analyze the pathogenesis and severity of acute ischemic cerebrovascular disease at the morphological and functional levels.展开更多
文摘目的探讨急性脑梗死患者脑血管异常与CT灌注成像(computed tomographic perfusion,CTP)参数的关系,以及对临床预后的影响。方法对75例发病6h内的颈内动脉系统急性脑梗死患者进行CT平扫、CTP及CT血管造影(CT angiography,CTA)检查,记录CTP各参数,同时评价病灶侧大血管情况;分别在发病时、发病第14天、发病第90天采用美国国立卫生研究院卒中量表(national institute of health stroke scale,NIHSS)、Barthel指数(Barthel index,BI)、改良的Rankin量表(modified rankinscale,mRS)评价临床神经功能缺损、日常生活能力及预后功能残疾水平。结果①75例患者CTA检查显示血管大致正常29例,大脑中动脉狭窄11例,大脑中动脉闭塞13例,颈内动脉狭窄6例,颈内动脉闭塞16例。②病灶侧血管狭窄组与血管闭塞组及血管正常组比较,患者缺血区脑血流(cerebral blood flow,CBF)异常面积、脑血容量(cerebral blood volume,CBV)异常面积、局部灌注达峰时间(time to peak,TTP)异常面积、梗死区相对CBF(relative CBF,rCBF)及相对CBV(relative CBV,rCBV)差异有统计学意义(P<0.05);其中血管闭塞组CTP的脑灌注参数异常改变均比血管正常组明显,且差异有统计学意义;血管狭窄组CTP的脑灌注参数仅CBF面积比血管正常组增加,且差异有统计学意义;血管闭塞组CTP的脑灌注异常范围(CBF面积、TTP面积、CBV面积)均明显大于血管狭窄组(P<0.05)。③患者发病时仅NIHSS评分在3组之间比较差异有统计学意义,血管正常组明显优于血管狭窄组和血管异常组;在发病第14天、发病第90天的NIHSS、BI、mRS评分在3组之间比较差异均有统计学意义(P<0.05),其中血管正常组各项评分均明显优于血管闭塞组患者(P<0.05)。结论急性脑梗死患者病灶侧血管异常与CTP显示的缺血范围相关,并且可以作为患者临床预后的评价指标。
基金supported by the Youth Fund of the First Clinical College of Liaoning Medical University, No. 2010C20
文摘Thirty-four patients with cerebral infarction and 18 patients with transient ischemic attack were examined by multi-slice spiral CT scan, CT perfusion imaging, and CT angiography within 6 hours after onset. By CT perfusion imaging, 29 cases in the cerebral infarction group and 10 cases in the transient ischemic attack group presented with abnormal blood flow perfusion, which corresponded to the clinical symptoms. By CT angiography, various degrees of vascular stenosis could be detected in 41 patients, including 33 in the cerebral infarction group and eight in the transient ischemic attack group. The incidence of intracranial artery stenosis was higher than that of extracranial artery stenosis. The intracranial artery stenosis was located predominantly in the middle cerebral artery and carotid artery siphon, while the extracranial artery stenosis occurred mainly in the bifurcation of the common carotid artery and the opening of the vertebral artery. There were 34 cases （83%） with convict vascular stenosis and perfusion abnormalities, and five cases （45%） with perfusion abnormalities but without convict vascular stenosis. The incidence of cerebral infarction in patients with National Institutes of Health Stroke Scale scores 〉 5 points during onset was significantly higher than that in patients with National Institutes of Health Stroke Scale scores 〈 5 points. These experimental findings indicate that the combined application of various CT imaging methods allows early diagnosis of acute ischemic cerebrovascular disease, which can comprehensively analyze the pathogenesis and severity of acute ischemic cerebrovascular disease at the morphological and functional levels.
