Depth-Dose-Distribution Control for Incident Beam Directionality and Irradiation Field Size in Boron Neutron Capture Therapy
スポンサーリンク
概要
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Studies on the controls of (i) incident beam directionality and (ii) irradiation field size were performed as dose-distribution control techniques in a human body for neutron capture therapy. Simulation calculation was performed for a human-head phantom using a two-dimensional transport calculation code for mono-energetic incidences of higher-energy epi-thermal neutrons (1.2 to 10 keV), lower-energy epi-thermal neutrons (3.1 to 23 eV) and thermal neutrons (1 meV to 0.5 eV). The beam quality such as the incidental ratio of fast neutrons and the beam quantity such as the peak height in the thermal neutron distribution for unit incident neutrons were evaluated. It was confirmed that an irradiation field with more forward-directionality and larger field size was more preferable for the treatment of deeper parts. This study confirmed that both control techniques for incident beam directionality and irradiation field size were effective in thermal neutron incidence. However, these were not as advantageous for epi-thermal neutron incidence considering the difficulty in the beam-direction control.
- 社団法人 日本原子力学会の論文
- 2005-01-25
著者
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SAKURAI Yoshinori
Research Reactor Institute, Kyoto University, Japan
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Sakurai Yoshinori
Research Reactor Institute Kyoto University
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Sakurai Yoshinori
Research Reactor Inst. Kyoto Univ.
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Sakurai Yoshinori
Research Reactor Institute, Kyoto University
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