男性,42岁。查体B超检查发现左肾结石1cm大小。平时无明显症状,偶有腰部酸胀隐痛不适感。既往体健,无排石史。目前,首先要做的检查是()。 ["A.尿常规","膀胱镜检查","MRI","KUB+IVU","尿流率检查"]
放射性核素脑血管造影常用的显像剂为() ["A.TcO","B.Tc-ECD","C.Tc-GH","D.Tc-DTPA","E.Tc-HMPAO"]
下列不属于血脂成分的是() ["磷脂","非酯化脂肪酸","胆固醇及其酯","甘油三酯","胆碱和胆铵"]
SPECT在脑灌注显像中脑梗死灶显示灌注减低区范围较CT为() ["范围大,但发现晚","范围大,且发现早","范围小,且发现晚","范围小,且发现早","范围一样,但发现晚"]
产妇用药的原则,下列最正确的是()。 ["子宫收缩加强","防止低血压","避免子宫出血","镇静","避免胎儿窒息"]
具有变形运动和吞噬功能的是()参与形成血脑屏障的是()形成周围有髓神经纤维的髓鞘的是()