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目的:探讨脑白质疏松的MRI表现并与临床对照分析.材料与方法:搜集资料完整经MRI诊断为脑白质疏松者100例,男71例,女29例.年龄49~80岁,平均66岁.根据MRI所见和病灶部位,将脑白质疏松分为两大类、0~Ⅲ级.比较临床症状、脑血管病变与脑白质疏松的关系.结果:第一类脑白质疏松病灶较第二类脑白质疏松病灶发病率高,尤其Ⅰ级脑白质疏松病灶明显高于第二类脑白质疏松病灶,主要位于大脑皮层下白质区域,病理基础以伴有多发性脑梗塞、脑萎缩等脑血管病变所致脑缺血为主要原因.脑白质疏松还与高血压密切相关,但与症状和体征无明显相关.结论:MRI是发现脑白质疏松的重要手段,对预防老年性痴呆有重要意义.“,”Objective: To Study the MRI fiwhngs of leukoaraiosis, and to compare the findings with the clinical data. Materials and Methods:MRI findings of 100 patients (71 male and 29 female, mean 66 years), being diagnosed with a 0. 2T MR unit, were retrospectively analyzed.Leukoaraiosis are divided into two types and 0 to 3 grades according to its locatico and MRI features. A comparison was made between clinical symptoms, cerebrovascular diseases and leukoaraiosis. Results:Type I, especially grads 1, wae more frequently seen than type 2. The lesipms of leukoaraiosis were mainly located at subcortical whithe matter, and were caed basically by cerebral ischemia due to cereboascular diseases, such as multiple infarction, encephalntrophy, etc. Leukoaraiosis showed a close relation to hypeension, but hare no relationship to symptoms and signs. Conclusion: MRI is very helpful in detecting leukoaraiosis and in peventing senile dementia.