A myocardial imaging agent for use in humans comprising a Tc(III) complex ligated in a planar position by a tetradentate ligand having incorporated therein four hard atotms and two furanone rings and in the axial positions by phosphines containing dioxanyl or ether moieties. The agent exhibits improved biodistribution, improved labeling and extremely rapid blood clearance following administration to a human. The agent has high myocardial uptake accompanied with exceptionally rapid hepatobilary clearance and extensive renal clearance to give sufficiently high heart/liver and heart/lung ratio that provide nearly ideal myocardial images in humans. A kit for producing the myocardial imaging agent is provided.
一种用于人类的心肌成像剂,包括一个Tc(III)络合物,由一个四齿
配体以平面位置配位,其中包含四个硬原子和两个
呋喃酮环,并通过含有二氧杂环或醚基团的
膦酸配体在轴向位置上配位。该剂具有改善的
生物分布、改善的标记和极快的血液清除速度,在给人体后具有高度的心肌摄取率,伴随着异常快速的肝胆排泄和广泛的肾清除,从而产生足够高的心脏/肝脏和心脏/肺比率,为人类提供几乎理想的心肌图像。提供了一种用于生产心肌成像剂的工具包。