title: Precise measurement of the activity of 186Re, 188Re radiopharmaceuticals.
abstract: The paper presents the results obtained in the assurance of traceability along the whole chain: production, distribution, use in hospitals, for the activity measurement of radiopharmaceuticals containing 186Re, 188Re and 186Re + 188Re mixtures. Standardization of the solutions, 4piPC-beta-efficiency relations and responses of a Centronic IG 12/20A ionization chamber and other radioisotope calibrators are presented. Gamma-ray and bremsstrahlung radiation contributions in the total response were evaluated. Some of the relevant results were compared with literature data.
authors.affiliation: National Institute of R&D for Physics and Nuclear Engineering Horia Hulubei, IFIN-HH, Bucharest, Romania. msahagia@ifin.nipne.ro
authors.forename: Maria
authors.initials: M
authors.lastname: Sahagia
authors.forename: Anamaria Cristina
authors.initials: AC
authors.lastname: Razdolescu
authors.forename: E L
authors.initials: EL
authors.lastname: Grigorescu
authors.forename: A
authors.initials: A
authors.lastname: Luca
authors.forename: C
authors.initials: C
authors.lastname: Ivan
mesh_terms: D005720:Gamma Rays; D006801:Humans; D011868:Radioisotopes / Q000032:analysis* / Q000592:standards*; D011874:Radiometry / Q000295:instrumentation / Q000592:standards; D019275:Radiopharmaceuticals / Q000032:analysis* / Q000592:standards*; D012015:Reference Standards; D012211:Rhenium / Q000032:analysis* / Q000592:standards*; D013679:Technology, Radiologic
chemical_list: D011868:Radioisotopes; D019275:Radiopharmaceuticals; D012211:Rhenium