RADIOPHARMACEUTICAL PRODUCTS AND THEIR PREPARATION PROCEDURE

摘要

The present invention relates to radiopharmaceutical products and their preparation procedure. These products can be used for pulmonary scintigraphy or for therapy. They comprise a polysaccharide and sequestering groups of formulae R-NH-, R-N=, and formula (I) in which R is a hydrocarbonic or aromatic group comprising at least one atom of sulphur, and R' is an atom of hydrogen or an alkyl grouping such as methyl, said sequestering groups formi ng a chelate type complex with a radioactive metal such as technetium.