The aquaeductus mesencephali shift angle is less than 5-25 degrees. Ⅲ:The uaeductus mesencephali and the fourth ventricle are contralateral shift obviously,and narrow,occlusion with hydrocephalus,The aquaeductus mesencephali shift angle is more than 25 degrees.
Ⅲ级:脑干受压其侧缘、导水管、第四脑室明显向对侧弧形移位,伴狭窄、闭塞,同时伴有脑积水,导水管移位角度大于25度。
参考来源 - 听神经鞘瘤脑干受压程度分级与显微外科治疗临床分析·2,447,543篇论文数据,部分数据来源于NoteExpress
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