Estimation of Effective Energy in Phantom in X-ray CT Using Monte Carlo Simulation
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- KONDO Shimpei
- Department of Radiological Technology, Graduate School of Medicine, Nagoya University
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- KOYAMA Shuji
- Department of Radiological Technology, Graduate School of Medicine, Nagoya University
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The aim of research was to estimate X-ray energy spectrum and effective energy in phantom undergoing X-ray CT scan using Electron Gamma Shower 5 Monte Carlo simulation. Radiation source of X-ray CT (TCT-300; Toshiba Medical, Tochigi, Japan) was revolved 360 degrees at intervals of 1 degree around a phantom which was a water cylinder of 32cm diameter. An X-ray CT is generally equipped with the beam-shaping filter in front of the X-ray tube radiation window. For making X-ray CT simulation more concrete, effective energy and dose distribution in each degree of the fan beam after penetrating through the beam-shaping filter were measured with an ionization chamber, which were incorporated in the simulation. The number of photons was counted by the energy for obtaining in-phantom X-ray spectrum in small discs in a cylindrical water phantom, and effective energy was calculated from in-phantom X-ray spectrum. Effective energy is nearly uniformity in the phantom, and an insignificant difference exists between incident and in-phantom X-ray spectrum.
収録刊行物
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- Progress in Nuclear Science and Technology
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Progress in Nuclear Science and Technology 3 82-85, 2012
Atomic Energy Society of Japan
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詳細情報 詳細情報について
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- CRID
- 1390287696161030400
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- NII論文ID
- 40019464338
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- NII書誌ID
- AA12785802
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- NDL書誌ID
- 024039824
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- ISSN
- 21854823
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可