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.
一种用于人体的心肌成像剂,包括一个Tc(III)配合物,由一个四齿
配体以平面位置配位,其中含有四个硬原子和两个
呋喃酮环,并且在轴向位置由含有二氧杂环或醚基团的
膦配体配位。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,适用于人体。该剂具有高心肌摄取率,伴随着极快的肝胆排泄和广泛的肾排泄,以提供足够高的心脏/肝脏和心脏/肺比率,从而在人类中提供几乎理想的心肌图像。提供了制备心肌成像剂的试剂盒。