Progress in Medical Physics (한국의학물리학회지:의학물리)

Korean Society of Medical Physics (한국의학물리학회)
권호 표지
DOI QR코드

DOI QR Code

Formulation of a New En Score in the Proficiency Test

  • Chul-Young Yi (Ionizing Radiation Metrology Group, Korea Research Institute of Standards and Science (KRISS)) ;
  • In Jung Kim (Ionizing Radiation Metrology Group, Korea Research Institute of Standards and Science (KRISS)) ;
  • Jong In Park (Ionizing Radiation Metrology Group, Korea Research Institute of Standards and Science (KRISS)) ;
  • Yun Ho Kim (Ionizing Radiation Metrology Group, Korea Research Institute of Standards and Science (KRISS)) ;
  • Young Min Seong (Ionizing Radiation Metrology Group, Korea Research Institute of Standards and Science (KRISS))
  • Received : 2023.12.11
  • Accepted : 2024.02.21
  • Published : 2024.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

A new En score of the proficiency test (PT) is formulated; it is applicable when a correlation exists between the reference and participant's values. Based on the uncertainty propagation rule given in ISO/IEC Guide 98-3 (GUM:1995), the En score covering the correlation case is newly developed for the PT. The new En score will be applied in a future PT organized by the Korea Research Institute of Standards and Science (KRISS) dosimetry team. The new En score will enhance measurement traceability and contribute to improving the quality management system of participants in the KRISS PT by avoiding performance underestimation.

Keywords

References

  1. International Organization for Standardization (ISO). Reference number KS Q ISO/IEC 17025. General requirements for the competence of testing and calibration laboratories. ISO; 2017. 
  2. International Organization for Standardization (ISO). Reference number KS Q ISO/IEC 17043. Conformity assessment - general requirements for proficiency testing. ISO; 2010. 
  3. Yi CY, Kim IJ, Park JI, Kim YH, Seong YM. Proficiency test for the dosimetry audit service provider. Prog Med Phys. 2022;33:72-79. 
  4. International Organization for Standardization (ISO). Reference number KS Q ISO 13528. Statistical methods for use in proficiency testing by interlaboratory comparison. ISO; 2015. 
  5. International Organization for Standardization (ISO). ISO/IEC Guide 98-3. Uncertainty of measurement - part 3: guide to the expression of uncertainty in measurement (GUM:1995). ISO; 2008. 
  6. Allisy PJ, Burns DT. Treatment of correlations in comparisons. Consultative Committee for Ionizing Radiation (CCRI) uncertainty workshop document. Workshop(I)/05-07. Bureau International des Poids et Mesures; 2005. 
  7. Burns DT, Butler DJ. Updated report on the evaluation of degrees of equivalence in regional dosimetry comparisons. Consultative Committee for Ionizing Radiation (CCRI) meeting document. CCRI(I)/17-09. Bureau International des Poids et Mesures; 2017. 
  8. International Atomic Energy Agency (IAEA). IAEA TRS-398 (V.12). Absorbed dose determination in external beam radiotherapy. An international code of practice for dosimetry based on standards of absorbed dose to water. IAEA; 2000.