KMID : 0384620110220030148
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Korean Journal of Medical Physics 2011 Volume.22 No. 3 p.148 ~ p.154
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Study on the Evaluation of TRS-398 Quality Factors with Central Electrode Corrections for Small Cylindrical Chambers
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Kang Yeong-Rok
Lee Chang-Yeol Kim Jin-Ho Moon Young-Min Kwak Dong-Won Kang Sang-Koo Kim Jeung-Kee Yang Kwang-Mo Jeong Dong-Hyeok
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Abstract
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The quality factors (kQ,Q?) were evaluated by appling the results recently studied for the effect of central electrode in TRS-398 protocol. The PTW-31010 and IBA-CC13 chambers were used in this study. The quality factors were calculated as a function of beam quality for high energy electron and photon beams and compared with data currently used in TRS-398 protocol. In the PTW-31010 chamber using aluminium electrode, appling the new central electrode collections, the quality factors were 0.4% and 0.9% higher than current TRS-398 data for high energy photon and electron beams respectively. In the IBA-CC13 chamber using C-552 electrode, there are no variations in quality factors compared to TRS-398 data currently used
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KEYWORD
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TRS-398 protocol, Quality factor, Central electrode correction
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