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Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics最新文献

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[EDITOR'S NOTE]. [编者按]。
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics Pub Date : 2022-01-01 DOI: 10.11323/jjmp.42.4_231
{"title":"[EDITOR'S NOTE].","authors":"","doi":"10.11323/jjmp.42.4_231","DOIUrl":"https://doi.org/10.11323/jjmp.42.4_231","url":null,"abstract":"","PeriodicalId":13394,"journal":{"name":"Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics","volume":"42 4","pages":"231"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10449903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Neutrons in Clinical Practice: BNCT]. 临床实践中的中子:BNCT。
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics Pub Date : 2022-01-01 DOI: 10.11323/jjmp.42.3_143
Hiroki Tanaka
{"title":"[Neutrons in Clinical Practice: BNCT].","authors":"Hiroki Tanaka","doi":"10.11323/jjmp.42.3_143","DOIUrl":"https://doi.org/10.11323/jjmp.42.3_143","url":null,"abstract":"<p><p>Boron neutron capture therapy (BNCT) is a radiation therapy that uses charged particles produced by a nuclear reaction between thermal neutrons and <sup>10</sup>B. A high-intensity neutron source is required to perform BNCT, and it is important to understand the behavior of neutrons. Since BNCT using accelerators has been approved as a medical device, the number of treatment facilities is expected to increase in the future. This article describes the basic knowledge required to understand BNCT in clinical practice, including neutron generation and material interactions, as well as radiation protection considerations specific to BNCT.</p>","PeriodicalId":13394,"journal":{"name":"Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics","volume":"42 3","pages":"143-148"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40388465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Basic Knowledge of Neutron: Generation of Neutrons Accompanied with Particle Therapy]. [中子基础知识:伴随粒子治疗的中子的产生]。
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics Pub Date : 2022-01-01 DOI: 10.11323/jjmp.42.3_156
Shinnosuke Matsumoto, Yutaro Mori
{"title":"[Basic Knowledge of Neutron: Generation of Neutrons Accompanied with Particle Therapy].","authors":"Shinnosuke Matsumoto,&nbsp;Yutaro Mori","doi":"10.11323/jjmp.42.3_156","DOIUrl":"https://doi.org/10.11323/jjmp.42.3_156","url":null,"abstract":"<p><p>Particle therapy uses high-energy charged particles, which cause nuclear reactions with a beam limiting device and a patient, resulting in the generation of high-energy secondary neutrons. These secondary neutrons cause low-dose exposure to organs far from the treatment target, and have a high biological effect due to their energy characteristics, which may cause of secondary cancers after radiotherapy. This article describes the neutron generation mechanism (cross section, and energy spectrum), interaction with the secondary neutron source (beam limiting device, and the patient), measurement of neutrons, and considerations for radiation protection of patients from secondary neutrons, generated by proton and carbon beam radiation therapy.</p>","PeriodicalId":13394,"journal":{"name":"Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics","volume":"42 3","pages":"156-163"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40388467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Study on the Concentration of Radioactive Cesium in the Environment after the Fukushima Daiichi Nuclear Power Plant Accident]. [福岛第一核电站事故后环境中放射性铯浓度的研究]。
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics Pub Date : 2022-01-01 DOI: 10.11323/jjmp.42.3_164
Hideo Shimizu, Kazumasa Inoue, Hiroshi Tsuruoka, Masaru Takabatake, Masahiro Fukushi
{"title":"[Study on the Concentration of Radioactive Cesium in the Environment after the Fukushima Daiichi Nuclear Power Plant Accident].","authors":"Hideo Shimizu,&nbsp;Kazumasa Inoue,&nbsp;Hiroshi Tsuruoka,&nbsp;Masaru Takabatake,&nbsp;Masahiro Fukushi","doi":"10.11323/jjmp.42.3_164","DOIUrl":"https://doi.org/10.11323/jjmp.42.3_164","url":null,"abstract":"<p><p>The Tohoku-Pacific Ocean Earthquake that occurred on March 11, 2011 and the resulting tsunami caused the loss of many people and extensive damage in a wide area. Among the anthropogenic radionuclides dispersed from the Fukushima Daiichi Nuclear Power Plant, <sup>134</sup>Cs and <sup>137</sup>Cs have very long half-lives of approximately 2 years and 30 years, respectively, and there are concerns about their uptake into soil and living things. This paper describes a study conducted by the authors' group on radiocesium activity concentrations in the environment.</p>","PeriodicalId":13394,"journal":{"name":"Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics","volume":"42 3","pages":"164-169"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40388468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Report of RAS6087]. [RAS6087报告]。
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics Pub Date : 2022-01-01 DOI: 10.11323/jjmp.42.3_173
Yoshitomo Ishihara
{"title":"[Report of RAS6087].","authors":"Yoshitomo Ishihara","doi":"10.11323/jjmp.42.3_173","DOIUrl":"https://doi.org/10.11323/jjmp.42.3_173","url":null,"abstract":"","PeriodicalId":13394,"journal":{"name":"Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics","volume":"42 3","pages":"173-175"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40388470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Fundamental Studies on Improvement of Count Rate Performance of Scintillation Detectors]. [提高闪烁探测器计数率性能的基础研究]
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics Pub Date : 2022-01-01 DOI: 10.11323/jjmp.42.1_7
Hideo Murayama
{"title":"[Fundamental Studies on Improvement of Count Rate Performance of Scintillation Detectors].","authors":"Hideo Murayama","doi":"10.11323/jjmp.42.1_7","DOIUrl":"https://doi.org/10.11323/jjmp.42.1_7","url":null,"abstract":"The purpose of this article is to introduce fundamental studies on improvement of count rate performance of scintillation detectors which Dr. Eiichi Tanaka dedicated himself to carrying out. He proposed a new technique based on the combination of pulse shortening and selective integration in which the integration period is not fixed but shortened by the arrival of the following pulse. Theoretical analysis of the degradation of the statistical component of resolution is made for the proposed system with delay line pulse shortening, and the factor of resolution loss is formulated as a function of the input pulse rate. A new method is also presented for determining the statistical component of resolution separately from the non-statistical system resolution. Preliminary experiments with a NaI (Tl) detector had been carried out, the results of which are consistent with the theoretical prediction. The related works are also introduced.","PeriodicalId":13394,"journal":{"name":"Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics","volume":"813 1","pages":"7-16"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78903773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[History of Medical Physics]. [医学物理学史]。
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics Pub Date : 2022-01-01 DOI: 10.11323/jjmp.42.4_201
Masahiro Endo
{"title":"[History of Medical Physics].","authors":"Masahiro Endo","doi":"10.11323/jjmp.42.4_201","DOIUrl":"https://doi.org/10.11323/jjmp.42.4_201","url":null,"abstract":"","PeriodicalId":13394,"journal":{"name":"Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics","volume":"42 4","pages":"201-211"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9151188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Preface to Special Issue "Introduction to Scientific Achievements of the Late Dr. Eiichi Tanaka"]. [特刊“已故田中荣一博士科学成就简介”前言]。
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics Pub Date : 2022-01-01 DOI: 10.11323/jjmp.42.1_1
Hideo Murayama, Hiroyuki Kudo
{"title":"[Preface to Special Issue \"Introduction to Scientific Achievements of the Late Dr. Eiichi Tanaka\"].","authors":"Hideo Murayama,&nbsp;Hiroyuki Kudo","doi":"10.11323/jjmp.42.1_1","DOIUrl":"https://doi.org/10.11323/jjmp.42.1_1","url":null,"abstract":"","PeriodicalId":13394,"journal":{"name":"Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics","volume":"42 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9587245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[〈Chicago Report〉Vietnam, Cambodia, Poland and Alaska]. [<芝加哥报告>越南、柬埔寨、波兰和阿拉斯加]。
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics Pub Date : 2022-01-01 DOI: 10.11323/jjmp.42.3_182
Kunio Doia
{"title":"[〈Chicago Report〉Vietnam, Cambodia, Poland and Alaska].","authors":"Kunio Doia","doi":"10.11323/jjmp.42.3_182","DOIUrl":"https://doi.org/10.11323/jjmp.42.3_182","url":null,"abstract":"","PeriodicalId":13394,"journal":{"name":"Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics","volume":"42 3","pages":"182-199"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40388472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Biological Effects of Neutron Radiation: An Overview]. [中子辐射的生物效应:综述]。
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics Pub Date : 2022-01-01 DOI: 10.11323/jjmp.42.2_73
Tatsuhiko Imaoka
{"title":"[Biological Effects of Neutron Radiation: An Overview].","authors":"Tatsuhiko Imaoka","doi":"10.11323/jjmp.42.2_73","DOIUrl":"https://doi.org/10.11323/jjmp.42.2_73","url":null,"abstract":"<p><p>Exposure of human body to neutrons occurs in radiotherapy using high-energy radiations. This review summarizes knowledges related to biological effects of neutrons, including those obtained in recent projects in Japan and Europe. A study of Japanese atomic bomb survivors with recently revised dosimetry indicated very high relative biological effectiveness (RBE) of 25-80 (as point estimates) regarding cancer risk. Animal studies indicate RBE of 2-100 or even higher regarding cancer induction, which seem to have a peak around ～1 MeV. Evidence suggests that these values depend on the age and sex. Reported RBE regarding the effects on the lens of the eye is in a similar range and sometimes very high. Regarding other tissue reactions, reported RBE values range from 2-10. Experiments at the cellular level have reported RBE of 1-5 regarding cell killing, 2-20 regarding induction of mutations (with a peak at ～1 MeV), and ～1 regarding induction of DNA double strand breaks. A simulation study predicted that the RBE of induction of complex DNA breaks peaks at ～1 MeV with a value of ～17. The complex breaks produced are likely to be far less in amount than simple DNA breaks, leading to a subtle increase in the yield of total DNA breaks; however, these complex damages may be very efficient in inducing mutations and cancer. Thus, the combination of the yield of complex DNA damage and its efficacy in inducing cancer is considered to underlie the high RBE of neutrons regarding cancer risk.</p>","PeriodicalId":13394,"journal":{"name":"Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics","volume":"42 2","pages":"73-79"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40406477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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