PROGRESS IN ORGANIZING NATIONAL AND INTERNATIONAL COMPARISONS FOR NUCLEAR MEDICINE MEASUREMENTS

摘要

The paper presents the progress registered by the Radionuclide Metrology Laboratory (RML) from IFIN-HH. in improvement of the quality of radiopharmaceuticals activity measurement, and assurance of the whole traceability chain from international level to the national users. The progress in organization of comparisons for radiopharmaceulicals activity measurement is analyzed. A detailed description of two recent national comparisons, and an international one, regarding ~(131)I solutions, within the frame of the IAEA's CRP E2.10.05 "Harmonization of quality practices for nuclear medicine radioactivity measurements" is done, with the analysis of the strong and week points in measurements. The most important outcome of the paper is the analysis of the evolution in quality of comparisons since a previously reported one. At the RML level, the improvements are: demonstration of the international equivalence of primary Romanian activity standard, improvement of the secondary standard, relevance of the comparison within the IAEA frame, implementation of a quality system in standardization and in comparisons, and implication of the RML in calibrations and metrological checks. The participants' reported improvements refer to growing of the awareness in quality of measurement and improvement of the measurement equipment. Reasons for future comparisons organization are presented.