| 摘要 |
A radiopharmaceutical product comprising a polysaccharide provided with sequestering groups linked to the polysaccharide by covalent bonds and chosen from among the groups of formulae R-NH-, R-N=, and the formula as illustrated where R is a hydrocarbonic or aromatic group comprising at least one atom of sulphur, and R1 is an atom of hydrogen or an alkyl. The sequestering groups form with a radioactive metal a complex of the chelate type, where the polysaccharide is in the form of microparticles. The radioactive metal is chosen from technetium, rhenium, copper, yttrium, erbium, gallium and samarium.
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