【名词&注释】
可见光(visible light)、静脉注射(intravenous injection)、电离辐射(ionizing radiation)、软组织(soft tissue)、傅立叶(fourier)、带电粒子(charged particle)、扫描时间(scanning time)、看不见、肺动脉干(pulmonary trunk)、右下肺动脉(right inferior pulmonary artery)
[单选题]右肺门角是哪两种结构的夹角 ( )
A. 右中叶静脉和右下肺动脉(right inferior pulmonary artery)
B. 右下肺动脉(right inferior pulmonary artery)干(pulmonary trunk)和右主支气管
C. 右上叶下后静脉干和右下肺动脉(right inferior pulmonary artery)
D. 右上叶下后静脉干和气管
E. 右上叶下后静脉和右主支气管