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Dose and Image Evaluations of Imaging for Radiotherapy  

Lee, Hyounggun (Department of Radiology Science, Korea University)
Yoon, Changyeon (Department of Radiology Science, Korea University)
Kim, Tae Jun (Department of Radiation Oncology, Kyung Hee University International Medical Service)
Kim, Dongwook (Department of Radiation Oncology, Kyung Hee University International Medical Service)
Chung, Weon Kyu (Department of Radiation Oncology, Kyung Hee University International Medical Service)
Park, Sung Ho (Department of Radiation Oncology, Asan Medical Center)
Lee, Wonho (Department of Radiology Science, Korea University)
Publication Information
Progress in Medical Physics / v.23, no.4, 2012 , pp. 292-302 More about this Journal
Abstract
The patient dose in advanced radiotherapy techniques is an important issue. These methods should be evaluated to reduce the dose in diagnostic imaging for radiotherapy. Especially, the Computed Tomography in radiotherapy has been used widely; hence the CT was evaluated for dose and image in this study. The evaluations for dose and image were done in equal condition due to compare the dose and image simultaneously. Furthermore, the possibility of dose and image evaluations by using the Monte Carlo simulation MCNPX was confirmed. We made the iterative reconstruction for low dose CT image to elevate image quality with Maximum Likelihood Expectation Maximization; MLEM. The system we developed is expected to be used not only to reduce the patient dose in radiotherapy, also to evaluate the overall factors of image modalities in industrial research.
Keywords
Dose reduction; MLEM; Iterative reconstruction; CT;
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