new technetium labelled myocardial imaging agent teboroxime is reported. Its quality is identified after labelling.The results indicate that its physical

chemical and biological aspects are in accordance with radiopharmaceutical quality control standard made by our country.The animal experiment shows that there is no difference between the experimental group and the control group after injecting one hundredfold human’s dose in mice.After injection 0.1ml（207.2kBq/per mouse）

the myocardial peak uptake is observed at the second minute

which is 17.75±0.33%（gorgan）-1

the heart clearance is also rapid

at the 15th minute postinjection

the uptake by myocardium is 8.24±4.72%（g organ）-1.The liver is the major excretion organ.The characteristic of pharmacokinetium in rabbits can be a pharmacokinetics basis for a rapid planar myocardial imaging protol of multiple position.