In four patients with vasculitis,whole-body MRA depicted luminal irregularity,narrowing or occlusion,aneurysm,and collateral circulation involving multiple vascular segments.是什么意思_In four patients with vasculitis,whole-body MRA depicted luminal irregularity,narrowing or occlusion,aneurysm,and collateral circulation involving multiple vascular segments.在线翻译_英语_读音_用法_例句