nonoperative hepatic arterial embolization method非手术肝动脉栓塞法 nicotinhydroxamic acid methiodide烟碱羟肟酸碘甲烷季铵盐,烟碱异羟肟酸甲碘化盐 neonate hyperammonemia新生儿高氨血症 nucleus hypothalamicus anterior(拉)下丘脑前核 nonspecific hepatocellular abnormality非特异性肝细胞异常