文档介绍：64排螺旋CT脑灌注和CT血管成像在大脑中动脉狭窄或闭塞的应用
【摘要】目的:研究探讨64排螺旋CT脑灌注联合头颈部CT血管成像在大脑中动脉(MCA)狭窄或闭塞中的临床临床应用价值。方法:对64例已经确诊的大脑动脉狭窄或闭塞患者和12名正常成年人行头颅螺旋CT平扫、CTP(CT脑容积灌注成像)和CTA(CT血管成像)检查。以患者脑血流量(CBF)、脑血容量(CBV)、平均通过时间(MTT)和达峰时间(TP)等参数值,判定脑动脉狭窄所致缺血状况。结果:临床64例患者,单侧MCA狭窄或闭塞患者36例,其中8例CTP正常,另外28例存在不同程度的脑CTP灌注延迟。双侧MCA狭窄或闭塞患者28例,为双侧脑缺血。结论:脑CTP检查所显示的MTT和TP图能准确显示MCA狭窄或闭塞所致的脑灌注损伤,是脑缺血的诊断和治疗的重要依据。
【关键词】大脑中动脉;狭窄;闭塞;CT灌注;CT血管成像
【Abstract】Objective:To study the brain of 64-slice spiral CT bined head and neck CT angiography in the middle cerebral artery (MCA) stenosis or occlusion in the clinical clinical applications. Method:64 cases have been diagnosed with cerebral artery stenosis or occlusion patients and 12 normal adults underwent head spiral CT scan, CTP (CT perfusion imaging of brain volume) and CTA (CT angiography) examination. Cerebral blood flow in patients (CBF), cerebral blood volume (CBV), mean transit time (MTT) and time to peak (TP) and other parameters, to determine the status of cerebral artery stenosis cause
d by :The 64 patients, patients with unilateral MCA stenosis or occlusion in 36 cases, 8 cases CTP normal and 28 patients presented with varying degrees of brain CTP perfusion delay. Bilateral MCA stenosis or occlusion in 28 patients, bilateral cerebral :Brain CTP MTT and check the displayed map can accurately show the TP MCA stenosis or occlusion due to ce