| 摘要 |
PROBLEM TO BE SOLVED: To provide a radioactive technetium complex enhancing cardiac contrast and initial circulation extraction rate in a single photon discharge type tomogram, and a radioactive imaging diagnostic agent by using the complex. SOLUTION: This compound is expressed by formula (1) [wherein,<SP>99m</SP>Tc(CO)<SB>3</SB>is technetium-99m tricarbonyl compound; and L is a bisphosphinoamine compound]. The radioactive imaging diagnostic agent is obtained by blending the compound. As the bisphosphinoamine compound L, bis(dimethoxypropylphosphinoethyl)methoxyethylamine, bis(dimethoxypropylphosphinoethyl)ethoxyethylamine, bis(diethoxypropylphosphinoethyl)ethoxyethylamine, etc., are exemplified. COPYRIGHT: (C)2008,JPO&INPIT
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