Standardization of 99mTc

Maria Sahagia

doi:10.1016/j.apradiso.2006.02.026

Standardization of 99mTc

Appl Radiat Isot. 2006 Oct-Nov;64(10-11):1234-7. doi: 10.1016/j.apradiso.2006.02.026. Epub 2006 Mar 22.

Author

Maria Sahagia¹

Affiliation

¹ National Institute of R&D for Physics and Nuclear Engineering Horia Hulubei, IFIN-HH, P.O. Box MG-6, Bucharest, RO-77125, Romania. [email protected]

PMID: 16554173
DOI: 10.1016/j.apradiso.2006.02.026

Abstract

The radioactivity of 99mTc was standardized by the 4piPC-gamma coincidence method with two different modes. One is using coincidences between (119.5-142.6)keV conversion electrons and K X-rays, and the other is coincidences between the 2.13 keV conversion electrons and 140.5 keVgamma-rays. The background of the K X-ray peak and the sensitivity of the proportional counter (PC) to 140 keV gamma-rays were the main sources of uncertainties in the first case and low detection efficiency for conversion electrons in the second case. General coincidence equations were written, with specific forms, for the three measurement variants, including literature variant. Comparison with the ionization chamber calibration is reported.

Publication types

Comparative Study
Evaluation Study

MeSH terms

Algorithms*
Guidelines as Topic
Radiation Dosage
Radiometry / methods*
Radiometry / standards*
Reference Standards
Reference Values
Reproducibility of Results
Romania
Sensitivity and Specificity
Spectrometry, Gamma / methods*
Spectrometry, Gamma / standards*
Technetium / analysis*
Technetium / standards*

Substances

Technetium