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目的观察头晕患者脑血流的改变并讨论相关机制。方法回顾吉林大学第一医院2011年6月~2012年6月神经内科306例诊断为头晕的患者进行研究，记录患者一般临床资料，然后分别进行经颅多普勒超声(TCD)检查，记录患者的大脑前动脉(ACA)、大脑中动脉(MCA)、大脑后动脉(PCA)、椎动脉(VA)和基底动脉(BA)的平均收缩期峰值流速(PSV)和平均搏动指数(PI)，统计数据并与TCD参考标准进行比较。结果入组306名患者包括男性154例(50.3%)，女性152例(占49.3%)。30~39岁的头晕患者ACA、MCA的PSV显著增快，VA的PSV显著减慢；40~59的头晕患者MCA、BA的PSV显著增快，ACA、PCA、VA的PSV显著减慢；>60岁的头晕患者MCA、PCA、BA的PSV显著增快，ACA、VA的PSV显著减慢。结论头晕患者可以出现颅内大血管血流速度的改变。“,”Objective To observe the change of Cerebral Blood Flow in the patients suf ering from dizziness and try to discuss the mechanism of the changes.Methods There were 306 patients admit ed in the retrospective study who were diagnosis of dizziness in the first hospital of Jilin university during June 2011 and June 2012.Do statistical analysis on the general clinical data of the patients,and compare with vascular stenosis and vertigo by univariate analysis.Results 306 patients(50.3%males and 49.35%females;mean age:59 years)were included in the research.In patients of dizziness between 30~39 years,the PSV of ACA and MCA were faster significantly and the PSV of VA was slower significantly.In the patients of 40~59 years,the PSV of MCA and BA were faster significantly and the PSV of ACA,PCA and VA were slower significantly than normal patients.The PSV of MCA,PCA and BA were faster significantly and the PSV of ACA and VA were slower significantly in patients of older than 60 years.Conclusion The patients suf ering from mental il ness could appear the change of the intracranial blood Cerebral Blood Flow.