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Taheri A, Sardari D, Sayyareh R, Sadeghi M. Dose mapping simulation and BSA design for improving the dosimetry accuracy for research reactor BNCT. JOURNAL OF NEUTRON RESEARCH 2020. [DOI: 10.3233/jnr-180082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Ali Taheri
- Department of Medical Radiation Engineering, Science and Research Branch, Islamic Azad University, P.O. Box 14515-775, Tehran, Iran
| | - Dariush Sardari
- Department of Medical Radiation Engineering, Science and Research Branch, Islamic Azad University, P.O. Box 14515-775, Tehran, Iran
| | - Reza Sayyareh
- Nuclear Science and Technology Research Institute (NSTRI), Iran
| | - Mahdi Sadeghi
- Medical Physics Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Experimental yield and evaluation of proton induced reactions for neutron production and synthesis of beryllium-7 using lithium compounds as target material. Appl Radiat Isot 2020; 155:108947. [DOI: 10.1016/j.apradiso.2019.108947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 10/03/2019] [Accepted: 10/15/2019] [Indexed: 11/22/2022]
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Nakamura S, Igaki H, Ito M, Okamoto H, Nishioka S, Iijima K, Nakayama H, Takemori M, Imamichi S, Kashihara T, Takahashi K, Inaba K, Okuma K, Murakami N, Abe Y, Nakayama Y, Masutani M, Nishio T, Itami J. Characterization of the relationship between neutron production and thermal load on a target material in an accelerator-based boron neutron capture therapy system employing a solid-state Li target. PLoS One 2019; 14:e0225587. [PMID: 31756237 PMCID: PMC6874357 DOI: 10.1371/journal.pone.0225587] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 10/11/2019] [Indexed: 01/25/2023] Open
Abstract
An accelerator-based boron neutron capture therapy (BNCT) system that employs a solid-state Li target can achieve sufficient neutron flux derived from the 7Li(p,n) reaction. However, neutron production is complicated by the large thermal load expected on the target. The relationship between neutron production and thermal load was examined under various conditions. A target structure for neutron production consists of a Li target and a target basement. Four proton beam profiles were examined to vary the local thermal load on the target structure while maintaining a constant total thermal load. The efficiency of neutron production was evaluated with respect to the total number of protons delivered to the target structure. The target structure was also evaluated by observing its surface after certain numbers of protons were delivered. The yield of the sputtering effect was calculated via a Monte Carlo simulation to investigate whether it caused complications in neutron production. The efficiency of neutron production and the amount of damage done depended on the proton profile. A more focused proton profile resulted in greater damage. The efficiency decreased as the total number of protons delivered to the target structure increased, and the rate of decrease depended on the proton profile. The sputtering effect was not sufficiently large to be a main factor in the reduction in neutron production. The proton beam profile on the target structure was found to be important to the stable operation of the system with a solid-state Li target. The main factor in the rate of reduction in neutron production was found to be the local thermal load induced by proton irradiation of the target.
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Affiliation(s)
- Satoshi Nakamura
- Department of Medical Physics, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Chuo-ku, Tokyo, Japan
| | - Hiroshi Igaki
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Chuo-ku, Tokyo, Japan
- Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
- * E-mail:
| | - Masashi Ito
- Department of Radiology, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hiroyuki Okamoto
- Department of Medical Physics, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Chuo-ku, Tokyo, Japan
| | - Shie Nishioka
- Department of Medical Physics, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Chuo-ku, Tokyo, Japan
| | - Kotaro Iijima
- Department of Medical Physics, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Hiroki Nakayama
- Department of Medical Physics, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
- Department of Radiological Science, Graduate School of Human Health Sciences, Arakawa-ku, Tokyo, Japan
| | - Mihiro Takemori
- Department of Medical Physics, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
- Department of Radiological Science, Graduate School of Human Health Sciences, Arakawa-ku, Tokyo, Japan
| | - Shoji Imamichi
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Chuo-ku, Tokyo, Japan
- Lab of Collaborative Research, Division of Cellular Signaling, National Cancer Center Research Institute, Chuo-ku, Tokyo, Japan
| | - Tairo Kashihara
- Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Kana Takahashi
- Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Koji Inaba
- Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Kae Okuma
- Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Naoya Murakami
- Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Yoshihisa Abe
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Chuo-ku, Tokyo, Japan
- Department of Radiological Technology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Yuko Nakayama
- Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Mitsuko Masutani
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Chuo-ku, Tokyo, Japan
- Lab of Collaborative Research, Division of Cellular Signaling, National Cancer Center Research Institute, Chuo-ku, Tokyo, Japan
- Center for Bioinformatics and Molecular Medicine, Department of Frontier Life Sciences, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto, Nagasaki, Japan
| | - Teiji Nishio
- Department of Medical Physics, Graduate School of Medicine, Tokyo Women’s Medical University, Shinjuku-ku, Tokyo, Japan
| | - Jun Itami
- Department of Medical Physics, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Chuo-ku, Tokyo, Japan
- Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
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Nakamura S, Igaki H, Okamoto H, Wakita A, Ito M, Imamichi S, Nishioka S, Iijima K, Nakayama H, Takemori M, Kobayashi K, Abe Y, Okuma K, Takahashi K, Inaba K, Murakami N, Nakayama Y, Nishio T, Masutani M, Itami J. Dependence of neutrons generated by 7Li(p,n) reaction on Li thickness under free-air condition in accelerator-based boron neutron capture therapy system employing solid-state Li target. Phys Med 2019; 58:121-130. [PMID: 30824143 DOI: 10.1016/j.ejmp.2019.02.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/22/2019] [Accepted: 02/12/2019] [Indexed: 10/27/2022] Open
Abstract
PURPOSE An accelerator-based boron neutron capture therapy (BNCT) system with a solid-state Li target is reported to have degradation of the Li target. The degradation reduces the Li thickness, which may change spectra of the generated neutrons corresponding to the Li thickness. This study aims to examine the relationship between the Li thickness and the generated neutrons and to investigate the effects of the Li thickness on the absorbed dose in BNCT. METHOD The neutron energy spectra were calculated via Monte Carlo simulation for Li thicknesses ranging from 20 to 150 μm. Using the system, the saturated radioactivity of gold induced by reactions between 197Au and the generated neutrons was evaluated with the simulation and the measurement, and those were compared. Additionally, for each Li thickness, the saturated radioactivity was compared with the number of generated neutrons. The absorbed doses delivered by 10B(n,α)7Li, 14N(n,p)14C, 1H(n, g)2H, and (n,n') reactions in water were also calculated for each Li thickness. RESULTS The measurement and simulation indicated a reduction in the number of neutrons due to the degradation of the Li target. However, the absorbed doses were comparable for each Li thickness when the requisite number of neutrons for BNCT was delivered. Additionally, the saturated radioactivity of 198Au could be a surrogate for the number of neutrons even if the Li thickness was varied. CONCLUSIONS No notable effect to the absorbed dose was observed when required neutron fluence was delivered in the BNCT even if the degradation of the Li was observed.
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Affiliation(s)
- Satoshi Nakamura
- Department of Medical Physics, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan.
| | - Hiroshi Igaki
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Department of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Hiroyuki Okamoto
- Department of Medical Physics, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Akihisa Wakita
- Department of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Masashi Ito
- Department of Radiology, National Center for Global Health and Medicine, Toyama 1-21-1, Shinjuku-ku, Tokyo 162-8655, Japan
| | - Shoji Imamichi
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Division of Genetics, National Cancer Center Research Institute, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Shie Nishioka
- Department of Medical Physics, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Kotaro Iijima
- Department of Medical Physics, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Hiroki Nakayama
- Department of Medical Physics, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Department of Radiological Science, Graduate School of Human Health Sciences, Higashi-ogu 7-2-10, Arakawa-ku, Tokyo 116-8551, Japan
| | - Mihiro Takemori
- Department of Medical Physics, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Department of Radiological Science, Graduate School of Human Health Sciences, Higashi-ogu 7-2-10, Arakawa-ku, Tokyo 116-8551, Japan
| | - Kazuma Kobayashi
- Department of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Yoshihisa Abe
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Department of Radiological Technology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Kae Okuma
- Department of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Kana Takahashi
- Department of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Koji Inaba
- Department of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Naoya Murakami
- Department of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Yuko Nakayama
- Department of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
| | - Teiji Nishio
- Department of Medical Physics, Graduate School of Medicine, Tokyo Women's University, Kawada-cho 8-1, Shinjuku-ku, Tokyo 162-8666, Japan
| | - Mitsuko Masutani
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Division of Genetics, National Cancer Center Research Institute, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Department of Frontier Life Sciences, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki 852-8588, Japan
| | - Jun Itami
- Department of Medical Physics, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan; Department of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan
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NAKAMURA S, IMAMICHI S, MASUMOTO K, ITO M, WAKITA A, OKAMOTO H, NISHIOKA S, IIJIMA K, KOBAYASHI K, ABE Y, IGAKI H, KURITA K, NISHIO T, MASUTANI M, ITAMI J. Evaluation of radioactivity in the bodies of mice induced by neutron exposure from an epi-thermal neutron source of an accelerator-based boron neutron capture therapy system. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2017; 93:821-831. [PMID: 29225308 PMCID: PMC5790759 DOI: 10.2183/pjab.93.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 09/08/2017] [Indexed: 06/07/2023]
Abstract
This study aimed to evaluate the residual radioactivity in mice induced by neutron irradiation with an accelerator-based boron neutron capture therapy (BNCT) system using a solid Li target. The radionuclides and their activities were evaluated using a high-purity germanium (HP-Ge) detector. The saturated radioactivity of the irradiated mouse was estimated to assess the radiation protection needs for using the accelerator-based BNCT system. 24Na, 38Cl, 80mBr, 82Br, 56Mn, and 42K were identified, and their saturated radioactivities were (1.4 ± 0.1) × 102, (2.2 ± 0.1) × 101, (3.4 ± 0.4) × 102, 2.8 ± 0.1, 8.0 ± 0.1, and (3.8 ± 0.1) × 101 Bq/g/mA, respectively. The 24Na activation rate at a given neutron fluence was found to be consistent with the value reported from nuclear-reactor-based BNCT experiments. The induced activity of each nuclide can be estimated by entering the saturated activity of each nuclide, sample mass, irradiation time, and proton current into the derived activation equation in our accelerator-based BNCT system.
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Affiliation(s)
- Satoshi NAKAMURA
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
- Department of Physics, Rikkyo University, Tokyo, Japan
- Division of Research and Development for boron neutron capture therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
| | - Shoji IMAMICHI
- Division of Research and Development for boron neutron capture therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
- Division of Genetics, National Cancer Center Research Institute, Tokyo, Japan
| | | | - Masashi ITO
- Division of Research and Development for boron neutron capture therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
- Department of Radiological Technology, National Cancer Center Hospital, Tokyo, Japan
| | - Akihisa WAKITA
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
- Division of Research and Development for boron neutron capture therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
| | - Hiroyuki OKAMOTO
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
- Division of Research and Development for boron neutron capture therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
| | - Shie NISHIOKA
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
- Division of Research and Development for boron neutron capture therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
| | - Kotaro IIJIMA
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Kazuma KOBAYASHI
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
- Division of Research and Development for boron neutron capture therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
| | - Yoshihisa ABE
- Division of Research and Development for boron neutron capture therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
- Department of Radiological Technology, National Cancer Center Hospital, Tokyo, Japan
| | - Hiroshi IGAKI
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
- Division of Research and Development for boron neutron capture therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
| | | | - Teiji NISHIO
- Department of Medical Physics, Graduate School of Medicine, Tokyo Women’s University, Tokyo, Japan
| | - Mitsuko MASUTANI
- Division of Research and Development for boron neutron capture therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
- Division of Genetics, National Cancer Center Research Institute, Tokyo, Japan
- Department of Frontier Life Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Jun ITAMI
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
- Division of Research and Development for boron neutron capture therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
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Kreiner AJ, Bergueiro J, Cartelli D, Baldo M, Castell W, Asoia JG, Padulo J, Suárez Sandín JC, Igarzabal M, Erhardt J, Mercuri D, Valda AA, Minsky DM, Debray ME, Somacal HR, Capoulat ME, Herrera MS, del Grosso MF, Gagetti L, Anzorena MS, Canepa N, Real N, Gun M, Tacca H. Present status of Accelerator-Based BNCT. Rep Pract Oncol Radiother 2016; 21:95-101. [PMID: 26933390 PMCID: PMC4747659 DOI: 10.1016/j.rpor.2014.11.004] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 10/18/2014] [Accepted: 11/07/2014] [Indexed: 11/22/2022] Open
Abstract
AIM This work aims at giving an updated report of the worldwide status of Accelerator-Based BNCT (AB-BNCT). BACKGROUND There is a generalized perception that the availability of accelerators installed in hospitals, as neutron sources, may be crucial for the advancement of BNCT. Accordingly, in recent years a significant effort has started to develop such machines. MATERIALS AND METHODS A variety of possible charged-particle induced nuclear reactions and the characteristics of the resulting neutron spectra are discussed along with the worldwide activity in suitable accelerator development. RESULTS Endothermic (7)Li(p,n)(7)Be and (9)Be(p,n)(9)B and exothermic (9)Be(d,n)(10)B are compared. In addition to having much better thermo-mechanical properties than Li, Be as a target leads to stable products. This is a significant advantage for a hospital-based facility. (9)Be(p,n)(9)B needs at least 4-5 MeV bombarding energy to have a sufficient yield, while (9)Be(d,n)(10)B can be utilized at about 1.4 MeV, implying the smallest possible accelerator. This reaction operating with a thin target can produce a sufficiently soft spectrum to be viable for AB-BNCT. The machines considered are electrostatic single ended or tandem accelerators or radiofrequency quadrupoles plus drift tube Linacs. CONCLUSIONS (7)Li(p,n)(7)Be provides one of the best solutions for the production of epithermal neutron beams for deep-seated tumors. However, a Li-based target poses significant technological challenges. Hence, Be has been considered as an alternative target, both in combination with (p,n) and (d,n) reactions. (9)Be(d,n)(10)B at 1.4 MeV, with a thin target has been shown to be a realistic option for the treatment of deep-seated lesions.
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Affiliation(s)
- Andres Juan Kreiner
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
- Escuela de Ciencia y Tecnología, Universidad de San Martín, Argentina
- CONICET, Argentina
| | - Javier Bergueiro
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
| | - Daniel Cartelli
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
- Escuela de Ciencia y Tecnología, Universidad de San Martín, Argentina
- CONICET, Argentina
| | - Matias Baldo
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
| | - Walter Castell
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
| | - Javier Gomez Asoia
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
| | - Javier Padulo
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
| | | | - Marcelo Igarzabal
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
| | - Julian Erhardt
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
| | - Daniel Mercuri
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
| | - Alejandro A. Valda
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
- Escuela de Ciencia y Tecnología, Universidad de San Martín, Argentina
| | - Daniel M. Minsky
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
- Escuela de Ciencia y Tecnología, Universidad de San Martín, Argentina
- CONICET, Argentina
| | - Mario E. Debray
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
- Escuela de Ciencia y Tecnología, Universidad de San Martín, Argentina
| | - Hector R. Somacal
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
- Escuela de Ciencia y Tecnología, Universidad de San Martín, Argentina
| | - María Eugenia Capoulat
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
- Escuela de Ciencia y Tecnología, Universidad de San Martín, Argentina
- CONICET, Argentina
| | - María S. Herrera
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
- Escuela de Ciencia y Tecnología, Universidad de San Martín, Argentina
- CONICET, Argentina
| | - Mariela F. del Grosso
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
- CONICET, Argentina
| | - Leonardo Gagetti
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
- Escuela de Ciencia y Tecnología, Universidad de San Martín, Argentina
- CONICET, Argentina
| | - Manuel Suarez Anzorena
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
| | - Nicolas Canepa
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
| | - Nicolas Real
- Gerencia de Investigación y Aplicaciones, CNEA, Av Gral Paz 1499, 1650 San Martin, Argentina
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Adib M, Habib N, Bashter II, El-Mesiry MS, Mansy MS. Simulation study of accelerator based quasi-mono-energetic epithermal neutron beams for BNCT. Appl Radiat Isot 2015; 107:98-102. [PMID: 26474209 DOI: 10.1016/j.apradiso.2015.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 09/17/2015] [Accepted: 10/04/2015] [Indexed: 10/22/2022]
Abstract
Filtered neutron techniques were applied to produce quasi-mono-energetic neutron beams in the energy range of 1.5-7.5 keV at the accelerator port using the generated neutron spectrum from a Li (p, n) Be reaction. A simulation study was performed to characterize the filter components and transmitted beam lines. The feature of the filtered beams is detailed in terms of optimal thickness of the primary and additive components. A computer code named "QMNB-AS" was developed to carry out the required calculations. The filtered neutron beams had high purity and intensity with low contamination from the accompanying thermal, fast neutrons and γ-rays.
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Affiliation(s)
- M Adib
- Reactor Physics Department, NRC, Atomic Energy Authority, Cairo, Egypt
| | - N Habib
- Reactor Physics Department, NRC, Atomic Energy Authority, Cairo, Egypt
| | - I I Bashter
- Physics Department, Faculty of Science, Zagazig University, Egypt
| | - M S El-Mesiry
- Reactor Physics Department, NRC, Atomic Energy Authority, Cairo, Egypt
| | - M S Mansy
- Physics Department, Faculty of Science, Zagazig University, Egypt.
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8
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Minsky DM, Kreiner AJ. Near threshold ⁷Li(p,n) ⁷Be reaction as neutron source for BNCT. Appl Radiat Isot 2015; 106:68-71. [PMID: 26235187 DOI: 10.1016/j.apradiso.2015.07.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 06/26/2015] [Accepted: 07/25/2015] [Indexed: 11/16/2022]
Abstract
(7)Li(p,n)(7)Be is an endothermic reaction and working near its threshold (1.88 MeV) has the advantage of neutron spectra with maximum energies of about 100 keV, considerably lower than at higher beam energies, or than using other neutron-producing reactions or as for the uranium fission spectrum, relevant for BNCT based on nuclear reactors. With this primary energy it is much easier to obtain the energies needed for treating deep seated tumors by BNCT (about 10 keV). This work studies bombarding energies up to 2.05 MeV, different beam incidence angles and the effect of the undesirable gamma production via the (7)Li(p,γp') (7)Li reaction.
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Affiliation(s)
- D M Minsky
- Gerencia de Investigación y Aplicaciones, CNEA, Av. Gral Paz 1499 (B1650KNA), San Martín, Buenos Aires, Argentina; Escuela de Ciencia y Tecnología, UNSAM, M. de Irigoyen 3100 (1650), San Martín, Argentina; CONICET, Av. Rivadavia 1917 (C1033AAJ), Buenos Aires, Argentina.
| | - A J Kreiner
- Gerencia de Investigación y Aplicaciones, CNEA, Av. Gral Paz 1499 (B1650KNA), San Martín, Buenos Aires, Argentina; Escuela de Ciencia y Tecnología, UNSAM, M. de Irigoyen 3100 (1650), San Martín, Argentina; CONICET, Av. Rivadavia 1917 (C1033AAJ), Buenos Aires, Argentina
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9
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Mirzaei D, Miri-Hakimabad H, Rafat-Motavalli L. Depth dose evaluation for prostate cancer treatment using boron neutron capture therapy. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3397-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Minsky D, Kreiner A. Beam shaping assembly optimization for 7Li(p,n)7Be accelerator based BNCT. Appl Radiat Isot 2014; 88:233-7. [DOI: 10.1016/j.apradiso.2013.11.088] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 11/20/2013] [Accepted: 11/21/2013] [Indexed: 11/16/2022]
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11
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Kreiner A, Baldo M, Bergueiro J, Cartelli D, Castell W, Thatar Vento V, Gomez Asoia J, Mercuri D, Padulo J, Suarez Sandin J, Erhardt J, Kesque J, Valda A, Debray M, Somacal H, Igarzabal M, Minsky D, Herrera M, Capoulat M, Gonzalez S, del Grosso M, Gagetti L, Suarez Anzorena M, Gun M, Carranza O. Accelerator-based BNCT. Appl Radiat Isot 2014; 88:185-9. [DOI: 10.1016/j.apradiso.2013.11.064] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 11/15/2013] [Accepted: 11/19/2013] [Indexed: 11/30/2022]
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12
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Aleynik V, Bashkirtsev A, Kanygin V, Kasatov D, Kuznetsov A, Makarov A, Schudlo I, Sorokin I, Taskaev S, Tiunov M. Current progress and future prospects of the VITA based neutron source. Appl Radiat Isot 2013; 88:177-9. [PMID: 24369890 DOI: 10.1016/j.apradiso.2013.11.132] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 10/31/2013] [Accepted: 11/21/2013] [Indexed: 11/30/2022]
Abstract
At the BINP, a pilot accelerator based epithermal neutron source is now in use. Most recent investigations on the facility are related with studying the dark current, X-ray radiation measuring, optimization of H(-)-beam injection and new gas stripping target calibrating. The results of these studies, ways of providing stability to the accelerator are presented and discussed, as well as the ways of creating the therapeutic beam and strategies of applying the facility for clinical use.
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Affiliation(s)
- V Aleynik
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
| | - A Bashkirtsev
- Novosibirsk State Technical University, 20 Karl Marx str., 630092 Novosibirsk, Russia
| | - V Kanygin
- Neurosurgery Center, 2a Vladimirovskiy spusk, 630003 Novosibirsk, Russia
| | - D Kasatov
- Novosibirsk State University, 2 Pirogov str., 630090 Novosibirsk, Russia
| | - A Kuznetsov
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
| | - A Makarov
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
| | - I Schudlo
- Novosibirsk State Technical University, 20 Karl Marx str., 630092 Novosibirsk, Russia
| | - I Sorokin
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
| | - S Taskaev
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia; Novosibirsk State University, 2 Pirogov str., 630090 Novosibirsk, Russia.
| | - M Tiunov
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
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13
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Kasesaz Y, Khalafi H, Rahmani F. Optimization of the beam shaping assembly in the D-D neutron generators-based BNCT using the response matrix method. Appl Radiat Isot 2013; 82:55-9. [PMID: 23954283 DOI: 10.1016/j.apradiso.2013.07.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2011] [Revised: 06/19/2013] [Accepted: 07/01/2013] [Indexed: 11/17/2022]
Abstract
Optimization of the Beam Shaping Assembly (BSA) has been performed using the MCNP4C Monte Carlo code to shape the 2.45 MeV neutrons that are produced in the D-D neutron generator. Optimal design of the BSA has been chosen by considering in-air figures of merit (FOM) which consists of 70 cm Fluental as a moderator, 30 cm Pb as a reflector, 2mm (6)Li as a thermal neutron filter and 2mm Pb as a gamma filter. The neutron beam can be evaluated by in-phantom parameters, from which therapeutic gain can be derived. Direct evaluation of both set of FOMs (in-air and in-phantom) is very time consuming. In this paper a Response Matrix (RM) method has been suggested to reduce the computing time. This method is based on considering the neutron spectrum at the beam exit and calculating contribution of various dose components in phantom to calculate the Response Matrix. Results show good agreement between direct calculation and the RM method.
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Affiliation(s)
- Y Kasesaz
- Nuclear Science and Technology Research Institute (NSTRI), Atomic Energy Organization of Iran (AEOI), Tehran 14399-51113, Iran
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14
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Evaluation of performance of an accelerator-based BNCT facility for the treatment of different tumor targets. Phys Med 2013; 29:436-46. [PMID: 23462279 DOI: 10.1016/j.ejmp.2013.01.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 01/24/2013] [Accepted: 01/28/2013] [Indexed: 11/21/2022] Open
Abstract
PURPOSE Encouraging Boron Neutron Capture Therapy (BNCT) clinical results obtained in recent years have stimulated intense research to develop accelerator-based neutron sources to be installed in clinical facilities. In this work an assessment of an accelerator-based BNCT facility for the treatment of different tumor targets was performed, comparing the accelerator-derived results with reported reactor-based trials under similar conditions and subjected to the same clinical protocols. MATERIALS AND METHODS A set of real image studies was used to cover clinical-like cases of brain and head-and-neck tumors. In addition, two clinical cases of malignant nodular melanoma treated at the RA-6 BNCT facility in Argentina were used to thoroughly compare the clinical dosimetry with the accelerator-derived results. RESULTS The minimum weighted dose delivered to the clinical target volume was higher than 30 Gy and 14 Gy for the brain tumor and head-and-neck cases, respectively, in agreement with those achieved in clinical applications. For the melanoma cases, the minimum tumor doses were equal or higher than those achieved with the RA-6 reactor for identical field orientation and protocol. The whole-body dose assessment showed that the maximum photon-equivalent doses for those normal organs close to the beam direction were below the upper limits considered in the protocols used in the present work. CONCLUSIONS The obtained results indicate not only the good performance of the proposed beam shaping assembly design associated to the facility but also the potential applicability of accelerator-based BNCT in the treatment of both superficial and deep-seated tumors.
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15
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Herrera M, González S, Burlon A, Minsky D, Kreiner A. Treatment planning capability assessment of a beam shaping assembly for accelerator-based BNCT. Appl Radiat Isot 2011; 69:1870-3. [DOI: 10.1016/j.apradiso.2011.03.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 03/04/2011] [Accepted: 03/17/2011] [Indexed: 10/18/2022]
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16
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Casal MR, Herrera MS, González SJ, Minsky DM. Computational dosimetry of a simulated combined standard X-rays and BNCT treatment. Appl Radiat Isot 2011; 69:1826-9. [PMID: 21367606 DOI: 10.1016/j.apradiso.2011.02.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Revised: 02/09/2011] [Accepted: 02/11/2011] [Indexed: 10/18/2022]
Abstract
There has been increasing interest in combining Boron Neutron Capture Therapy (BNCT) with standard radiotherapy, either concomitantly or as a BNCT treatment of a recurrent tumor that was previously irradiated with a medical electron linear accelerator (LINAC). In this work we report the simulated dosimetry of treatments combining X-rays and BNCT.
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Affiliation(s)
- M R Casal
- Instituto de Oncología Ángel H. Roffo, Universidad de Buenos Aires, Buenos Aires, Argentina.
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17
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Capoulat ME, Minsky DM, Kreiner AJ. Applicability of the 9Be(d,n)10B reaction to AB-BNCT skin and deep tumor treatment. Appl Radiat Isot 2011; 69:1684-7. [PMID: 21353576 DOI: 10.1016/j.apradiso.2011.02.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 02/08/2011] [Accepted: 02/08/2011] [Indexed: 10/18/2022]
Abstract
In the range of low bombarding energies (less than about 1.5 MeV) the (9)Be(d,n)(10)B reaction produces neutron spectra that can be moderated depending on the choice of the target thickness and the deuteron bombarding energy. In this work, a Monte Carlo simulation study to determine the capability of this reaction to deliver enough dose to efficiently control both skin and deep seated tumors has been performed by means of MCNP calculations using eight optimized (9)Be targets.
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Affiliation(s)
- M E Capoulat
- Gerencia de Investigación y Aplicaciones, CNEA, San Martín, Buenos Aires, Argentina.
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