The present invention provides positron emitter radiolabeled versions of PABA, metabolites and derivatives, with good radiochemical yield, high specific activity, high chemical and radiochemical purity and having excellent characteristics for PET imaging. The inventive composition and methods provide high quality dynamic images of the kidneys while reducing the radiation exposure. The short biological half-life of PABA, added to the short physical half-life of positron emitters such as 11C will also benefit patients that require multiple renography assessments in a short period of time.
本发明提供了正电子发射子标记的PABA、代谢产物和衍
生物,具有良好的放射
化学产率、高比活度、高
化学和放射
化学纯度,并具有优良的PET成像特性。这种创新的组合物和方法提供了高质量的肾脏动态图像,同时减少了辐射暴露。PABA的短
生物半衰期,加上11C等正电子发射子的短物理半衰期,也将使需要在短时间内进行多次肾功能评估的患者受益。