彩色多普勒超声测量椎动脉血流量对后循环缺血的诊断价值

目的探讨彩色多普勒超声测量椎动脉血流量对后循环缺血的诊断价值。方法选取临床拟诊为后循环缺血的患者58例（研究组）和无后循环缺血症状患者50例（对照组），行颈部血管超声检查，测量椎动脉内径及血流量。后循环缺血患者并做头颅CTA检查。结果研究组椎动脉内径及血流量明显低于对照组，两组椎动脉内径及血流量比较，差异有统计学意义（P〈0．01）；研究组伴有颈动脉硬化斑块者44例（77．5％），对照组伴有颈动脉硬化斑块者21例（42％），两组颈动脉硬化斑块发生率比较，差异有统计学意义（P〈0．05）。结论彩色多普勒超声可较准确测量椎动脉内径及血流量，可作为后循环缺血无创伤性的检查手段，具有直接、准确、方便，可重复性等优点。

Diagnostic value of measuring the blood flow volume of vertebral artery by color Doppler ultrasound in posterior circulation ischemia

Objective To explore the diagnostic value of measuring blood flow volume by color Doppler ultrasound in posterior circulation ischemia（PCI）. Methods Fifty-eight cases of PCI were recruited in experimental group and 50 cases without PCI were recruited in control group. The inner diameter and blood flow volume of vertebral artery were measured by ultrasonography in all the 118 cases. The 58 cases of PCI were examined with brain CTA. Results The blood flow volume in the experimental group was significantly lower than that in control group, both the blood flow volume and the inner diameter in the two groups were significantly difference（P〈0.01 ）. In experimental group, 44/58 had atherosclerotic plaques while 21/50 in control group, the incidence rates of the two groups were significantly difference（P〈0.05）. Conclusion The inner diameter and the blood flow volume of the vertebral artery can be accurately measured by color Doppler ultrasound, and it can been seen as a noninvasive examination for PCI, which is direct, accurate, convenient and repeatable.