环池在中脑外侧连接于四叠体池和脚间池之间，其内有大脑后动脉、小脑上动脉、脉络丛前、后动脉、基底动脉和滑车神经，为脑脊液循环的必经之路。
Lately,more and more authors attached importance to the CT scanning features ,especially the status of perimesencephalic cistern as a prognostic parameter for patients with acute craniocerebral injury. Most authors described the status of perimesencephalic cistern as open,compressed or absent cisterns.
近年来，CT影像尤其是基底池状态对急性颅脑损伤病人预后的判断引起国内外学者的重视，大多数研究在研究基底池时主要集中在环池，作者一般仅将基底池描述为闭塞、受压或基底池存在，而未能将环池状态进一步量化及阐明其与急性颅脑损伤病人预后的关系。
参考来源 - CT影像环池形态对急性颅脑损伤病人预后影响的前瞻性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
环池；变化；重型颅脑损伤。
目的：探讨环池在重型颅脑损伤中的变化及其临床意义。
Objective: To investigate the change of cisterna ambiens with severe craniocerebral trauma and its clinical significance.
方法：根据178例患者CT扫描变化，分析环池变化与临床疗效的关系。
Methods: According to the CT finding of 178 cases, the relationship between the change of cisterna ambiens and the clinical results were analyzed.
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