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目的探讨蛛网膜下池大小随年龄的变化及其临床意义。方法对延边地区３１１名健康成人（男１９２、女１１９名）的头部ＣＴ片进行了５种蛛网膜下池测量，并做了方差分析和ｕ检验。结果５０岁以前测量值的差异无显著性，５０岁以后大脑纵裂池和大脑外侧窝池的ＣＴ测量值明显增大，而其他３种脑池的测量值在各岁年龄组之间无显著性差异。结论５０岁以后大脑纵裂池和大脑外侧窝池明显增大，这两个池的大小对脑池的大小和有无脑萎缩的判定有实用意义
Objective To explore the change of subarachnoid size with age and its clinical significance. Methods The head CT images of 311 healthy adults (192 males and 119 females) in Yanbian area were measured in 5 subarachnoid pools and analyzed by variance and u test. Results Before the age of 50, there was no significant difference between the measured values. After the age of 50, CT measurements of longitudinal longitudinal fissure pool and lateral cerebral foramina significantly increased, while those of the other three cerebral pools showed no significant difference among all age groups Sex differences. Conclusion After 50 years of age, the longitudinal fissure pool and the lateral fossa of the brain increased significantly. The size of the two pools had practical significance for determining the size of cerebral cistern and whether there was cerebral atrophy