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KMID : 0357520180410010039
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Journal of Radiological Science and Technology
2018 Volume.41 No. 1 p.39 ~ p.45
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Evaluation of the Utility of a Volumetric Modulated Arc Therapy Specific Patient Quality Assurance using Software-based Quality Assurance System
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Kang Dong-Jin
Jung Jae-Yong
Shin Young-Joo
Min Jung-Whan
Kim Yon-Lae
Kwon Kyung-Tae
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Abstract
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The purpose of this study is to evaluate the usefulness of a software-based quality assurance system based on Volumetric M odulated A rc T herapy t reatment p lan. E valuate treatment plan t hrough t he D VH a nalysis, P TV m ean dose (��????) and PTV 95% dose(�� �憤� ) compare the MFX based on original treatment plan, Average error rate was 0.9±0.6%, 1.0±0.8%, respectively. Measuring point dose using phantom and ion chamber, the average error rate between the ionization chamber and MFX was 0.9±0.7%, 1.1±0.7% (high dose region), 1.1±0.9%, 1.2±0.7% (low dose region). The average gamma though of MFX and Delta4PT is 98.7±1.2%, 98.4±1.3%, respectively. Through this study, A software based QA system that simplifies hardware based QA procedures that involve a lot of time and effort. It can be used as a simple and useful tool in clinical practice.
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KEYWORD
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Software-based quality assurance, Log file, Gamma index, Patient specific quality assurance, Delivery quality assurance
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