n.放射指示劑(放射示蹤物)

The extraction and separation of uranium from lead and bismuthwith TBP-benzene was studied by radiotracer technique. 用放射性示蹤法研究了TBP-苯體系對(duì)鈾和鉛、鉍的萃取分離。

The bone sintigraphy revealed significant accumulation of radiotracer in the left ureter. 核醫(yī)骨骼掃描影像發(fā)現(xiàn)在左側(cè)輸尿管有明顯放射活性聚集。

All of the women underwent mammography and MBI.The radiotracer used in the trial was supplied by the manufacturer. 這些婦女都接受乳房攝影和MBI，試驗(yàn)中使用的放射性示蹤劑由制造商提供。

The results showed that the accuracy were high and the relative error was small and the effects were good,compared with radiotracer method. 結(jié)果表明:采用稱重法測(cè)定準(zhǔn)確度高,相對(duì)誤差小,效果好,與示蹤劑法所測(cè)結(jié)果相近。

The most commonly used PET radiotracer is fluorodeoxyglucose (FDG), a radiolabeled form of glucose, which is consumed more aidly by tumors than by normal tissue. 最常用的PET放射示蹤跡為氟脫氧葡萄糖（FDG），葡萄糖的放射示蹤形式，在腫瘤組織中較正常組織消耗更快。