Evaluation by perfusion - weighted magnetic resonance to hemodynamic character and surgical effect of carotid system stenoses or occlusion 灌注核磁共振技术对颈动脉系统狭窄或闭塞的血流动力学和外科疗效的评价
The ductus carotis arteriosus and ductus botalli are still present and link up the arterial arches separately . there are two aa . gastrica , one coming from aorta dorsalis directed branch , the other coming from a . gastrolinealis which branch of aa 2 .动脉系统:颈动脉导管、波氏导管依然存在;胃动脉有两个来源:背主动脉的直接分支,肠系膜动脉的胃脾分支;肝动脉为来自腹腔肠系膜动脉的一级分支。