Korean J Med Phys.
2008 Jun;19(2):120-124.
Development of QA Phantom Prototype for Imaged Based Radiation Treatment System
- Affiliations
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- 1Department of Biomedical Engineering, The Catholic University of Korea, Seoul, Korea. suhsanta@catholic.ac.kr
- 2Department of Radiation Oncology, Kangnam St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
- 3Department of Radiation Oncology, St. Vincent's Hospital, The Catholic University of Korea, Seoul, Korea.
- 4Department of Radiation Oncology, National Cancer Center, Seoul, Korea.
Abstract
- 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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