The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1976
Filed:
Mar. 26, 1974
Applicant:
Inventors:
Andre Bardy, Morangis, FR;
Jacqueline Beydon, Paris, FR;
Assignee:
Commissariat a l'Energie Atomique, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61k / ;
U.S. Cl.
CPC ...
424-1 ; 2323 / ; 206 84 ; 250303 ; 424128 ;
Abstract
A method for preparing a pyrophosphate-tin composition labelled with 99.sup.m technetium for medical diagnosis by scintigraphy, especially bone scintigraphy. A pyrophosphate solution and a freshly prepared stannous chloride solution are mixed together and then neutralized to a pH within the range of 5 to 7, the mixture is eventually lyophilized in order to obtain a pyrophosphate-tin complex in powder form which is then mixed with a solution containing 99.sup.m Tc, the last-mentioned final step of the method being carried out at the moment of use. The complex has a pyrophosphate-tin molecular ratio of at least 30.