应用经颅多普勒超声（ＴＣＤ）检测糖尿病脑梗塞ＤＣＩ和非糖尿病脑梗塞（ＮＤＣＩ）各１８例，并与１８例正常对照组进行比较，发现两组病人都以收缩期峰值血流速度（Ｖｐ）的改变为主，ＤＣＩ组的Ｖｐ异常又显著高于ＮＤＣＩ组（Ｐ＜０．０１）。Ｖｐ的改变主要是速度增快，且多伴有血管杂音，可见涡流信号。这些改变以ＭＣＡ和ＣＳ最突出，ＡＣＡ、ＢＡ、ＶＡ和ＰＣＡ均有累及。结果表明ＤＣＩ病人血管损害的范围比ＮＤＣＩ病人广泛得多，可以解释糖尿病病人脑卒中患病率高的原因。 18 cases of diabetic cerebral infarction DCI and non-diabetic cerebral infarction (NDCI) were detected by transcranial Doppler echocardiography (TCD), and compared with 18 normal control group, found that both groups were based on peak systolic blood flow velocity ( Vp). The abnormal Vp in DCI group was significantly higher than NDCI group (P <0.01). Vp changes mainly speed up, and more accompanied by vascular murmur, eddy current signal can be seen. These changes are most prominent in MCA and CS, ACA, BA, VA and PCA are involved. The results showed that the scope of vascular damage in DCI patients than NDCI patients is much wider, can explain the reasons for the high prevalence of stroke in diabetic patients.