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 language | Undefined/Unknown |
|---|---|
| Pages (from-to) | 7-14 |
| Number of pages | 8 |
| Journal | Malaysian Journal of Analytical Sciences |
| Volume | 18 |
| Issue number | 1 |
| Publication status | Published - 2014 |
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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 journal › Article
}
TY - JOUR
T1 - Kestabilan jangka panjang pekali tentukuran kebuk pengionan jenis farmer kepunyaan pusat radioterapi di Malaysia
AU - Mukhtar, A. M.
AU - Samat, Supian
AU - Dolah, M. T.
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
KW - Calibration coefficients N Stability
KW - Farmer type ionization chambers
KW - Radiotherapy centres
UR - http://www.scopus.com/inward/record.url?scp=84898731331&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84898731331&partnerID=8YFLogxK
M3 - Article
VL - 18
SP - 7
EP - 14
JO - Malaysian Journal of Analytical Sciences
JF - Malaysian Journal of Analytical Sciences
SN - 1394-2506
IS - 1
ER -