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KMID : 0384620080190020120
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Korean Journal of Medical Physics
2008 Volume.19 No. 2 p.120 ~ p.124
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Development of QA Phantom Prototype for Imaged Based Radiation Treatment System
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Chang Ji-Na
Lee Do-Hyun
Suh Tae-Suk
O Seng-Jong
Jang Hong-Seok
Jung Won-Gyun
Kim Hoi-Nam
Kang Dae-Gyu
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Abstract
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In this study, we developed the protopype of QA phantom for image QA including an additional component for image based radiation treatment system. The new phantom considered two main parts: Image quality and fusion accuracy. Image quality part included for daily CT number linearity and spatial resolution, and fusion accuracy part designed to simulate a simple translation-rotation setting. The CT scans of the phantom obtained from conventional CT, MVCT of Tomotherapy unit, and both image sets were satisfied the recommendation of spatial resolution. This phantom was simple and efficient for daily imaging QA, and it is important to provide a new concept of verification of image registration.
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KEYWORD
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QA phantom, Image based radiation treatment system, Imaging quality, Fusion accuracy
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