Method of tagging excipients with 99M technetium
AssigneeCommissariat a l'Energie Atomique
InventorsAndre Bardy, Jacqueline Beydon, Renee Gobin, Michel Hegesippe
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Abstract
A method of using .sup.99m technetium for tagging excipients in medical diagnosis by scintigraphy comprises mixing, in an aqueous solution of alkali-metal pertechnetate, an excipient and a reducing agent in the form of a complex, which complex is such that the association constant of the anion with reduced technetium is less than the association constant of the excipient with reduced technetium, thereby forming a radio-pharmaceutical substance which is a complex between the excipient and .sup.99m technetium.
Claims7
A method of using .sup.99m Tc for tagging excipients in medical diagnosis by scintigraphy, which method comprises mixing, in an aqueous solution of alkalimetal pertechnetate, an excipient and a reducing agent complex present in a lower concentration, wherein the association constant of the anion of the reducing agent complex with reduced technetium is less than the association constant of the excipient with reduced technetium, thus forming a radio-pharmaceutical substance which is a complex between the excipient and 99.sup.m technetium.
Dependencies are inferred from the claim text.