title: Proficiency test of ⁹⁰Y and ⁸⁹Sr activity measurements in Polish hospitals.
abstract: The Radioisotope Centre POLATOM organized a proficiency test of activity measurements of (90)Y and (89)Sr with nuclear medicine departments in Polish hospitals. Radioactive solutions used in this exercise were standardized by the TDCR method using the measurement systems of the National Standard of Radionuclides Activity in Poland. Results were analysed in compliance with ISO/IEC 17043:2010 (ISO, 2010) by calculating z scores and ζ (zeta) scores. The overall performance of the participants varied significantly. The sources of errors appeared to be the values of the calibration factor used during activity assay and the underestimation of uncertainties by the participants.
authors: National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Soltana 7, 05-400 Otwock, Poland. Electronic address: t.dziel@polatom.pl.
authors: Tomasz
authors: T
authors: Dziel
authors: National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Soltana 7, 05-400 Otwock, Poland.
authors: Anna
authors: A
authors: Listkowska
authors: National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Soltana 7, 05-400 Otwock, Poland.
authors: Zbigniew
authors: Z
authors: Tymiński
mesh_terms: D002138:Calibration; D006761:Hospitals; D011044:Poland; D012015:Reference Standards; D013326:Strontium Radioisotopes / Q000032:analysis* / Q000592:standards; D015021:Yttrium Radioisotopes / Q000032:analysis* / Q000592:standards
chemical_list: D013326:Strontium Radioisotopes; D015021:Yttrium Radioisotopes
keywords: Nuclear medicine; Proficiency test; Radioactivity; Radionuclide calibrators; Strontium-89; Yttrium-90