Schreiber Stephan Joachim, Kauert Andreas, Doepp Florian, Valdueza Josè Manuel
Department of Neurology, University Hospital Charité, Berlin, Germany.
Cerebrovasc Dis. 2003;15(1-2):129-32. doi: 10.1159/000067141.
Ultrasound assessment of global cerebral circulation time (CCT) using echo-contrast bolus tracking is a new approach to characterise the perfusion status of the human brain. We present the analysis of global CCT in 36 healthy volunteers and one patient with a cerebral arteriovenous malformation (AVM), measured by extracranial power duplex. CCT was defined as the time interval between bolus arrival in the internal carotid artery and internal jugular vein. CCT in the volunteer group was 7.5 +/- 1.1 s (mean +/- SD). Values did not correlate with age, gender, blood pressure or blood flow velocity. Measurement in the AVM patient revealed a CCT of 1.5 s. Ultrasonographic CCT analysis is a promising new tool for the evaluation of cerebral hemodynamics.
使用超声造影团注追踪技术对全脑循环时间（CCT）进行超声评估是一种表征人脑灌注状态的新方法。我们展示了通过颅外能量多普勒测量的36名健康志愿者和1名患有脑动静脉畸形（AVM）患者的全脑CCT分析。CCT定义为造影剂团注到达颈内动脉和颈内静脉之间的时间间隔。志愿者组的CCT为7.5±1.1秒（平均值±标准差）。这些值与年龄、性别、血压或血流速度无关。对AVM患者的测量显示CCT为1.5秒。超声CCT分析是评估脑血流动力学的一种有前景的新工具。
