老年人常见脑疾患的MRI分析研究

ANALYSIS OF COMMON BRAIN DISORDERS IN OLD PEOPLE USING MRI

目的:应用磁共振技术,探讨老年常见脑疾患与年龄的相关性。方法:回顾性分析我院2004-01～2009-07 5166例老年人头颅MRI影像资料,统计分析有意义脑疾患的构成比。并按年龄分为60～、65～、70～、75～和80岁以上5个年龄组,以正常组作为对照组,分析常见脑疾患不同年龄组间的变化趋势。结果:缺血性脑梗死共2178例,占全部病例的42%,该疾病高发于60～70岁年龄组;脑萎缩和皮层下动脉硬化性脑病的发病率随着年龄的增长逐渐增加;然而,正常组、脱髓鞘改变组和肿瘤性疾病的发病率随年龄增长逐渐下降;其次,脑出血在65-75岁年龄组最多见,其后其发病率逐渐下降。结论:脑血管病中缺血性脑梗死是最常见的疾病。脑萎缩、皮层下动脉硬化性脑病随着年龄的增长明显增加。缺血性脑梗死在60-70岁年龄组、脑出血在65-75岁年龄组为发病高峰,其后逐渐下降。脱髓鞘改变在MRI诊断中比较特殊,但本质上随年龄增长而增加。肿瘤性脑疾患随年龄增长而降低。

Objective：To explore the relevance between common brain diseases and age in aged people.Methods：The constitute ratios of brain diseases was achieved by the retrospective analysis of Head magnetic resonance imaging（MRI） of 5166 cases of 60 years and older people,which were collected during January 2004 and July 2009.We classified them into 5 groups（60~,65~,70~,75~and〉80 groups） and elucidated the trends of common diseases rate among these groups with the normal group as the control.Results：The cases of Ischemic cerebral infarction were 2178,which was 42% of all,the incidence of which was high in the 60~70 age groups;The incidence of brain atrophy and subcortical arteriosclerotic encephalopathy increased with aging;however,the incidence of common group demyelinated encephalopathy and Neoplastic disease decreased with the aging;And then,the incidence of Hemorrhage was higher in 65 and 75 groups,which decreased with aging.