Founded in 1993
  Year: 2000 | Volume: 8 | Issue: 3 | Pages: 111-112
  Actual Problem
  COMPARISON OF AIR KERMA PRIMARY STANDARDS BETWEEN SZMDM AND OMH IN CO60 BEAM FROM THE STANDPOINT OF RADIOTHERAPY
Vesna SPASIC JOKIC, Istvan CSETE, Gabor MACHULA
  DOI:
  Abstract:
  As the ICRU (International Committee for Radiation Unit) and some international expert bodies concluded that there was a need for an accuracy of 5% in the delivery of absorbed dose in some treatment situations, dosimetry in radiotherapy generally became very serious metrological task. According to IAEA (International Atomic Energy Association) and WHO investigations in hospitals all over the world, radiotherapists do not use the same radiation beam, even physicists do not measure the same quantity. Due to that, there were some efforts made at the international level to unify measurements starting from 60Co as a calibration beam and air kerma calibration factor for ionization chambers. According to this recommendation, national metrological organizations perform international intercomparisons between the air kerma primary standards. The comparison performed between the air kerma standards of Savezni zavod za mere i dragocene metale (SZMDM) and Orszagos Meresugyi Hivatal (OMH) for 60Co gamma radiation is reported. It was the second international comparison between these two national metrological organizations which took place in Budapest in November, 1999. The results obtained with the two standards are in theagreement for 60Co gamma radiation.
  Key words: International comparison; Primary standards; Radiotherapy; Metrology; 60Co beam irradiation
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Founder, owner and publisher: Oncology Institute of Vojvodina, Serbia
Online since 1997 (Abstracts only); 2000 (Abstracts and Full text)
ISSN: 0354-7310 eISSN: 1450-9520