Kestabilan jangka panjang pekali tentukuran kebuk pengionan jenis farmer kepunyaan pusat radioterapi di Malaysia

Translated title of the contribution: Long term stability of farmer type ionization chamber calibration coefficient belonging to local radiotherapy centres in Malaysia

A. M. Mukhtar, Supian Samat, M. T. Dolah

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The accuracy of the ionization chambers' calibration coefficient is one of the factors that would contribute to efficient radiotherapy treatment. The IAEA therefore has recommended that an ionization chamber be calibrated every year, with a condition that the deviations between the previous and new calibration coefficients ND,w should not differ by ±1.5%. It has been identified that Farmer type ionization chambers is the most popular ionization chamber among the radiotherapy centres in Malaysia. For this reason, the purpose of this work is to evaluate the calibration coefficients' long term stability of the Farmer type ionization chambers. A total of 33 Farmer type ionization chambers were studied and the mean μ of the ND,w deviation together with its standard error SE were calculated. This μ±SE will be used to measure stability of ND,w. Our results showed that most chambers have μ±SE lies within the ±1.5%. It is thus concluded that most of the Farmer type ionization chamber were stable in their ND,w and safe to be used for radiotherapy treatment.

Original languageUndefined/Unknown
Pages (from-to)7-14
Number of pages8
JournalMalaysian Journal of Analytical Sciences
Volume18
Issue number1
Publication statusPublished - 2014

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Ionization chambers
Radiotherapy
Calibration

Keywords

  • Calibration coefficients N Stability
  • Farmer type ionization chambers
  • Radiotherapy centres

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Kestabilan jangka panjang pekali tentukuran kebuk pengionan jenis farmer kepunyaan pusat radioterapi di Malaysia. / Mukhtar, A. M.; Samat, Supian; Dolah, M. T.

In: Malaysian Journal of Analytical Sciences, Vol. 18, No. 1, 2014, p. 7-14.

Research output: Contribution to journalArticle

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