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http://dx.doi.org/10.7742/jksr.2021.15.5.723

Dose Distribution Comparison between Arc Radiation Therapy and Tomotherapy  

Kim, Ji-Yoon (Department of Physics, Yeungnam University)
Lee, Seung-Chul (Department of Radiation Oncology, Catholic Univ. of Korea Uijeongbu St'Mary Hospital)
Cheon, Geum-Seong (Department of Radiation Oncology, Catholic Univ. of Korea Seoul St'Mary Hospital)
Kim, Young-Jae (Department of Radiologic Technology, Daegu Health College)
Publication Information
Journal of the Korean Society of Radiology / v.15, no.5, 2021 , pp. 723-730 More about this Journal
Abstract
This study tries to compare dose distribution between arc radiation therapy and Tomotherapy, which are main radiation therapy modalities. The subjects of this study are lung cancer patients. For planning target volume (PTV), a dose of 60.0 Gy was set as a basis. The PTVmean of Arc was 61.04 Gy, and that of Tomotherapy was 58.50 Gy. The total lung capacities of Arc and Tomotherapy were 3.0 Gy and 4.24 Gy, respectively. The mean heart doses of Arc and Tomotherapy were 0.13 and 0.34, respectively; the mean trachea dose of Arc and Tomotherapy were 1.35 and 2.58, respectively; the mean esophagus dose of Arc and Tomotherapy were 0.41 and 0.86, respectively; the mean spinal cord dose of Arc and Tomotherapy were 3.65 and 4.68, respectively. With regard to the appropriateness of therapeutic effect in DHV, both modalities seemed appropriate. Tomotherapy protected normal tissues better than Arc radiation therapy. In Tomotherapy, patients need to have treatment long in a limited space. If such a point is overcome, Tomotherapy is better. Otherwise, Arc radiation therapy can be applied. This study was conducted with treatment planning images. Therefore, the results of this study are different from actual treatment results. If more research is conducted to overcome the limitation, the effects of radiation therapy are expected to increase further.
Keywords
Non-Small Lung Cancer; Radiation Therapy; IMRT;
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