摘要
本文着重研究了以氯化亚锡为还原剂,用99Tcm标记AEDP的条件,即Sn(Ⅱ)含量、标记时间、葡萄糖和抗坏血酸用量以及pH对标记率的影响,确定了最佳标记条件。实验结果表明,99Tcm-AEDP标记率>95%,标记后4h内放化纯度保持不变。小鼠体内生物分布及家兔显像均与99Tcm-MDP相当。AEDP稳定性好,合成简便。
abelingof1-amino-ethylenediphosphonateacid(AEDP)with99Tcmissudiedbyadi-rectlabelingmethodinthepresenceofSnCl22H2Oasreducingagent.Theefectoflabelingtime,theconcentrationsofSnCl22H2O,glucoseandascorbicacidandpHvalueareinvesti-gated.Theoptimumlabelingisdetermined.Theresultsshowthattheradiochemistrypurityof99Tcm-AEDPismorethan95%.Ratbiodistributionandrabbitγ-camerascintigraphyof99Tcm-AEDParealsostudiedandcomparedwith99Tcm-MDP.Theboneuptakeof99Tcm-AEDPishigherthananyotherorgans.Thewholerabbitboneimageisclearandsimilartothatof99Tcm-MDP.So99Tcm-AEDPisapotentialboneimagingagentandfurtherstudyisworth-while.
出处
《同位素》
CAS
1997年第4期232-237,共6页
Journal of Isotopes