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 atoms 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.
一种用于人体的心肌成像剂,包括一种Tc(III)配合物,由一个四齿
配体在平面位置上配位,其中包含四个硬原子和两个
呋喃酮环,并在轴向位置上由含有二氧环或醚基团的
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。该剂具有高的心肌摄取率,伴随着异常快速的肝胆排泄和广泛的肾排泄,可以提供足够高的心脏/肝脏和心脏/肺比率,从而在人体中提供几乎理想的心肌图像。