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您的检索式：作者名="Silva Bortolussi"
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| 1 | Analysis of influencing factors on the method for determining boron concentration and dose through dual prompt gamma detection显示文摘A method based on the cross-sectional relationship between^(10)B(n,α)^(7)Li and^(1)H(n,γ)^(2)H was proposed to detect and reconstruct the three-dimensional boron concentration/dose distribution in vivo during boron neutron capture therapy(BNCT).Factors such as the neutron energy,fluence rate,and degree of non-uniform distribution of the boron concentration in a voxel may affect the results of this method.A theoretical analysis of the accuracy of the method using a Monte Carlo simulation shows that the determining error is generally less than 1%under different tumor locations and neutron source configurations.When the voxel size is larger than 0.4 cm,the determining error might be higher for a non-uniformly distributed boron concentration in the voxel because of the changes in the neutron energy and fluence rate.In conclusion,the proposed method enables an accurate threedimensional boron determination in vivo during BNCT. | Feng Tian Chang-Ran Geng Xiao-Bin Tang Di-Yun Shu Huang-Feng Ye Silva Bortolussi Chun-Hui Gong | 2021 | Nuclear Science and Techniques2021，32，4： | 3 |
| 2 | Strategies for accurate response assessment of radiochromic film using flatbed scanner for beam quality assurance显示文摘Radiochromic film is a useful tool for beam quality assurance, but accurate response assessment of the film is still a problem. In this study, the response uncertainties of HDV2 film were investigated using a flatbed scanner from both the scanning settings and interscan variability. Scanning settings are fixed conditions for scanning, including scanning resolution and focus setting.In this study, multipeak distributions of pixel values were found under some dots-per-inch values, which should be avoided, and the optimal setting of 2000 dpi without this problem was selected. By changing the focus setting, the relative standard deviation of pixel values was reduced by 36–50%. The influence of the interscan variability induced by three factors was investigated, including the outside illumination intensity, film homogeneity, and operating temperature. Scanning the film before and after irradiation at the same position was recommended. Moreover, the suitable operating temperature range for the scanner was found to be 15–24 °C, which results in stable film responses. Regarding the studied factors, correction methods and strategies were proposed, and the accurate response assessment of HDV2 film was realized. Finally, a standard operating procedure for response assessment of films was introduced. It can help other researchers study more scanners, films, and particle types. | Xu-Dong Zhang Yuan-Hao Liu Xiao-Bin Tang Ming-Chen Hsiao Wei-Lin Chen Chang-Ran Geng Wen-Cheng Shao Chun-Hui Gong Silva Bortolussi Di-Yun Shu | 2019 | Nuclear Science and Techniques2019，30，11： | 0 |
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