Conclusion It is suggested that the presence of cervical artery sulcus ring of atlas was a negative factor in pilot sele结论有环椎椎动脉沟环者在飞行学员选拔中应作为一种负性因素。
Result The presence of cervical artery sulcus ring of atlas was found in 56 cases out of 346 pilots.结果在346例飞行员中发现56例有椎动脉沟环存在。