摘要
目的探讨超声检测脑梗塞患者颈动脉狭窄及血流动力学变化的价值。方法选用经CT或MRI证实为脑梗塞的患者60例,均行彩色多普勒超声检查,根据斑块所致的管腔狭窄程度分为4组:轻度组、中度组、重度组、闭塞组。用面积法计算狭窄率,脉冲多普勒检测收缩期血流速度(SPV)、舒张期末速度(EDV),计算血流量。结果60例脑梗塞患者中55例(92%)检出颈动脉硬化斑块,斑块所致颈动脉中度狭窄42支,重度狭窄20支,完全闭塞8支,其中部分斑块延伸至颈内动脉,导致管腔狭窄或闭塞。斑块致颈动脉血管狭窄>50%时,血流速度明显升高,血流量明显下降,完全闭塞时血流消失。结论超声能够监测脑梗塞患者颈动脉狭窄程度及血流动力学改变,是脑梗塞患者病情监测的重要手段。
Objective To study the value of ultrasound on detection of stenosis and the hemodynarnics of carotid arteries in the patients with cerebral infarction. Methods Color Doppler ultrasonography was performed on Sixty patients with ischemic brain infarction confirmed by CT or MRI. According to the stenosis degree of lumen, they were divided into 4 groups： mild, moderate, severe and obliterated group. Stenosis rate was calculated by planimetry. Peak systolic velocity （PSV） and end diastolic velocity （EDV） were measured by pulsed Doppler. Blood flow was calculated by equipment software automatically. Results Atheromatosis plaques were detected in ninety - two percent patients （55/60）, 42 carotid arteries were moderate stenosis, 20 carotid arteries were serious stenosis, 8 carotid arteries were vascular occlusion. When angiostenosis rate exceeded 50%, the flow velocity increased and the flow volume decreased. The flow signal disappeared when vascular occlusion took place. Conclusion Uhrasonography could be used to monitor the stenosis degree and the hemodynamics of the patients with cerebral infarction, and it would be an important method to evaluate the state of cerebral infarction.
出处
《临床超声医学杂志》
2008年第6期387-388,共2页
Journal of Clinical Ultrasound in Medicine
关键词
超声检查
多普勒
彩色
脑梗塞
颈动脉
Ultrasonography, Doppler, color
Cerebral infarction
Carotid artery
