title: Development of the modified sum-peak method and its application.
abstract: As the sum-peak method requires the total count rate as well as the peak count rates and the sum peak count rate, this meets difficulties when a sample contains other radionuclides than the one to be measured. To solve the problem, a new method using solely the peak and the sum peak count rates was developed. The method was theoretically and experimentally confirmed using (60)Co, (22)Na and (134)Cs. We demonstrate that the modified sum-peak method is quite simple and practical and is useful to measure multiple nuclides.
authors.affiliation: Radioisotope Research Center, Nagoya University, Nagoya, Japan. Electronic address: ogata.yoshimune@b.mbox.nagoya-u.ac.jp.
authors.forename: Y
authors.initials: Y
authors.lastname: Ogata
authors.affiliation: Gifu University of Medical Science, Gifu, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Miyahara
authors.affiliation: Nagoya City University, Nagoya, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ishihara
authors.affiliation: Graduate School of Medicine, Nagoya University, Nagoya, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Ishigure
authors.affiliation: Graduate School of Medicine, Nagoya University, Nagoya, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Yamamoto
authors.affiliation: Aichi Medical University, Aichi, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Kojima
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D008956:Models, Chemical; D011868:Radioisotopes / Q000032:analysis* / Q000737:chemistry*; D011874:Radiometry / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013051:Spectrometry, Gamma / Q000379:methods*
chemical_list: D011868:Radioisotopes
keywords: Absolute measurement of radioactivity; Co-60; Coincidence summing; Cs-134; Na-22; Sum-peak method