Methods: 100 cases PBSI diagnosed by clinical presentation had CT scanning within 48 hours after injury,10 of them took MRI. Their radiological features were studied.

• 方法：对100例临床诊断为原发脑干损伤病人伤后48小时内行头颅CT扫描，其中10例并进行了MRI检查，对其影像学特点进行分析研究。