3 0 0 0 OA 末梢リンパ球染色体異常発生率の生物学的線量計測への応用
- 著者
- 井上 義教 藤田 稔
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.8, no.2, pp.93-99, 1973 (Released:2010-02-25)
- 参考文献数
- 21
This is a brief investigation of biological dosimetry for human subjects. During the past decade techniques have been developed for the analysis of radiation-induced chromosome aberrations in human lymphocytes. As a result, a vast amount of studies on chromosome aberrations induced by radiation in human lymphocytes have been carried out. These studies have revealed the relationships between aberration frequencies and absorbed doses. At present this method appears to be the most readily quantifiable one of biological dosimetry available.The problems associated with the use of this method in estimating radiation dose are discussed. These problems include time of sampling after irradiation, culture time, dose rate, type of radiation, temperature at the time of irradiation, etc.
3 0 0 0 OA 水晶体の放射線防護に関する専門研究会中間報告書 (Ⅱ)
- 著者
- 赤羽 恵一 飯本 武志 伊知地 猛 岩井 敏 大口 裕之 大野 和子 川浦 稚代 立崎 英夫 辻村 憲雄 浜田 信行 藤通 有希 堀田 豊 山崎 直 横山 須美
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.49, no.3, pp.153-156, 2014 (Released:2015-07-18)
- 参考文献数
- 14
- 被引用文献数
- 3 2
A brief review is given of the history and methodology of external dosimetry for the lens of the eye. Under the 1989 revision to domestic radiological protection regulations, the concept on the effective dose equivalent and the dose limit to the lens of the eye (150 mSv/y) both introduced in the ICRP 1977 recommendations has changed nationwide the external monitoring methodology in non-uniform exposure situations to the trunk of a radiological worker. In such situations, which are often created by the presence of a protective apron, the worker is required to use at least two personal dosemeters, one worn on the trunk under the apron and the other, typically, at the collar over the apron. The latter dosemeter serves the dual purpose of providing the dose profile across the trunk for improved effective dose equivalent assessment and of estimating the dose to lens of the eye. The greater or appropriate value between Hp(10) and Hp(0.07), given by the dosemeter, is generally used as a surrogate of Hp(3) for recording the dose to the lens of the eye. The above-mentioned methodology was continued in the latest 2001 revision to the relevant regulations.
3 0 0 0 OA 水晶体の放射線防護に関する専門研究会中間報告書 (VI)
- 著者
- 赤羽 恵一 飯本 武志 伊知地 猛 岩井 敏 大口 裕之 大野 和子 川浦 稚代 立崎 英夫 辻村 憲雄 浜田 信行 藤通 有希 堀田 豊 山崎 直 横山 須美
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.50, no.2, pp.128-137, 2015 (Released:2016-01-09)
- 参考文献数
- 8
- 被引用文献数
- 2
While the revised dose limit for the lens of the eye was presented by the International Commission on Radiological Protection (ICRP), the dose measurement standards for the lens of the eye have been discussed in the International Organization for Standardization (ISO). In the International Basic Safety Standards of International Atomic Energy Agency (IAEA), a new ICRP dose limit of the lens of the eye was included, and a technical document was published as a guidance on the implications of the new dose limit for the lens of the eye for occupational radiation protection. By the International Radiation Protection Association (IRPA) Task Group on Implementation of Revised Dose Limits to the Lens of the Eye, the opinions for the new ICRP dose limit for the lens of the eye are investigated for the member states. In this paper, the progress of discussion in these organizations is reported.
3 0 0 0 OA 水晶体の放射線防護に関する専門研究会中間報告書 (V)
- 著者
- 赤羽 恵一 飯本 武志 伊知地 猛 岩井 敏 大口 裕之 大野 和子 川浦 稚代 立崎 英夫 辻村 憲雄 浜田 信行 藤通 有希 堀田 豊 山崎 直 横山 須美
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.50, no.1, pp.76-89, 2015 (Released:2015-12-18)
- 参考文献数
- 52
- 被引用文献数
- 2 4
For many Japanese radiation workers in the medical, nuclear and other industrial fields, the equivalent dose of the lens of the eye will be sufficiently lower than the new ICRP dose limit. However, the dose of the lens of the eye for medical staff members who are engaged in interventional radiology and cardiology may exceed the new ICRP dose limit, especially when they are exposed closely to higher scatter radiation for a long time. In addition, the radiation dosimetry and radiation protection for emergency and recovery workers in the Fukushima Daiichi Nuclear Power Plant (FNPP1) are important issues. Thus gathering information related to the radiation dose and protection for Japanese radiation workers is important to a discussion regarding implementation of the new ICRP dose limit for the lens of the eye for Japanese regulations and planning radiation dose reduction measures. In this paper, recent studies and issues regarding radiation exposure and protection in the medical, nuclear and other industrial fields, as well as for emergency and recovery workers in the FNPP1 were summarized.
3 0 0 0 OA 水晶体の放射線防護に関する専門研究会中間報告書 (IV)
- 著者
- 赤羽 恵一 飯本 武志 伊知地 猛 岩井 敏 大口 裕之 大野 和子 川浦 稚代 立崎 英夫 辻村 憲雄 浜田 信行 藤通 有希 堀田 豊 山崎 直 横山 須美
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.50, no.1, pp.67-75, 2015 (Released:2015-12-18)
- 参考文献数
- 40
- 被引用文献数
- 3
The International Commission on Radiological Protection (ICRP) and the International Commission on Radiation Units and Measurements (ICRU) have been defined operational quantities and protection quantities. Dose limits have been also recommended by the ICRP using protection quantities. These quantities and some related values for main radiation such as photons, electrons, and neutrons, are summarized in this article with some historical considerations. The ICRP indicated conversion coefficients for the lens of the eye as absorbed dose per fluence as protection quantities. Equivalent dose is not used because a protection quantity that uses radiation weighting factors is not intended to be calculated for tissue reactions. So far, the ICRP has not indicated a specific RBE value for cataract formation. Operational quantities are used for measurements. There have been three types of phantoms, namely a slab phantom, a reduced phantom, and a cylindrical phantom, but none of them has been definitely recommended for the lens of the eye by the ICRP or the ICRU. Although conversion coefficients to personal dose equivalent, Hp(3), for electrons have been recommended, no other conversion coefficients to personal dose equivalent for the lens of the eye has been indicated by the ICRP or the ICRU. However, there have been several studies described personal dose equivalent. Ambient dose equivalent, H*(3), and directional dose equivalent, H'(3,a), have been indicated in several limited conditions by the ICRP and the ICRU. These status are overviewed in this article.
- 著者
- 下 道国
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.19, no.4, pp.369-374, 1984 (Released:2010-02-25)
3 0 0 0 OA 乾性沈着によるガス状ヨウ素 (I2) の大気から米への移行
3 0 0 0 OA 原子力発電所放水口沖におけるトリチウムと温排水の拡散状況
- 著者
- 藤波 直人 西内 一 渡辺 哲也 都築 英明 伊吹 勝藏
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.32, no.3, pp.305-311, 1997 (Released:2010-02-25)
- 参考文献数
- 16
- 被引用文献数
- 1 1 2
In order to examine the dispersion of tritium released from the Takahama nuclear power plant into Uchiura Bay, seawater was sampled at three stations off the release point every two months. Tritium concentrations in these samples were determined. Simultaneously, the surface temperature of the seawater was also recorded at 25 points around the sampling stations. Observed data indicated that on those occasions when the sampling coincided with the release of tritium from the plant, the contribution of released tritium could be temporarily detected within the dispersion area of thermal effluent.
- 著者
- Shigenobu NAGATAKI
- 出版者
- Japan Health Physics Society
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.45, no.4, pp.370-378, 2010 (Released:2011-07-12)
- 参考文献数
- 12
- 被引用文献数
- 4 7
The latest knowledge encompass findings presented both in individual scientific publications and in internationally accepted reports. This review summarizes the latest knowledge on radiobiological effects on the latter level, using studies of atomic bomb survivors and victims of Chernobyl nuclear power plant accident. First of all, it is important to note that while examining individual patient, it is impossible to distinguish a radiation-induced cancer patient and non-radiation-induced cancer patient even when using state-of-the-art techniques. Therefore, investigation of radiation effects on humans, especially late health effects has been based on the epidemiological and statistical methods. Based on studies on atomic bomb survivors, it is well accepted that there is a linear increase in the risk of cancer with the increase of radiation dose. However, the existence of a threshold is a controversial issue, and health effects with regards to non-cancer diseases are not yet accepted by international authorities. Childhood thyroid cancer has increased after the Chernobyl accident and more than several thousands children are affected by it. However, there is no proof that any disease, with the exception of thyroid cancer and acute radiation effects, has increased after the Chernobyl accident. Finally, it should be mentioned that providing scientific explanation of the results to general public is an honorable duty of concerned scientists.
- 著者
- 神田 玲子 辻 さつき 米原 英典
- 出版者
- Japan Health Physics Society
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.49, no.2, pp.68-78, 2014
- 被引用文献数
- 3
In general, the press is considered to have amplified the level of public's anxiety and perception of risk. In the present study, we analyzed newspaper article headlines and Internet contents that were released from March 11, 2011 to January 31, 2012 using text mining techniques. The aim is to reveal the particular characteristics of the information propagated regarding the Fukushima NPP Accident. The article headlines of the newspapers which had a largest circulation were chosen for analysis, and contents of Internet media were chosen based on the number of times they were linked or retweeted. According to our text mining analysis, newspapers frequently reported the "measurement, investigation and examination" of radiation/radioactive materials caused by the Fukushima Accident, and this information might be spread selectively via the social media. On the other hand, the words related to health effects of radiation exposure (i. e., cancer, hereditary effects) were rare in newspaper headlines. Instead, words like "anxiety" and "safe" were often used to convey the degree of health effects. Particularly in March of 2011, the concept of "danger" was used frequently in newspaper headlines. These indirect characterizations of the situation may have contributed more or less to the misunderstanding of the health effects and to the enhanced perception of risk felt by the public. In conclusion, there were found no evidence to suggest that newspapers or Internet media users released sensational information that increased the health anxiety of readers throughout the period of analysis.
3 0 0 0 OA MIRD 法と内部被曝線量評価
3 0 0 0 OA 製鉄業におけるRIの利用と放射線管理
- 著者
- 宮川 一男
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.16, no.3, pp.231-235, 1981 (Released:2010-02-25)
- 参考文献数
- 3
3 0 0 0 OA 外部放射線に対する放射線防護実用量に関するICRUレポート委員会出席報告
3 0 0 0 OA 日本保健物理学会第46回研究発表会
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.48, no.3, pp.123-123, 2013 (Released:2013-12-10)
- 著者
- Naoto FUJINAMI Taeko KOGA Hiroshige MORISHIMA Farideh ZAKERI Seiichi NAKAMURA Kanji TORIZUKA Tsutomu SUGAHARA
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.46, no.1, pp.66-69, 2011 (Released:2012-01-25)
- 参考文献数
- 11
Individual external doses of inhabitants were examined in high levels of natural radiation areas (HLNRAs) in Ramsar. Each of 15 inhabitants in HLNRAs and 10 inhabitants in a control area carried an electronic personal dosimeter (EPD) for one day in April and in December 2005. In addition, their individual doses were estimated from indoor and outdoor radiation dose rates determined with a NaI (Tl) survey meter. A good correlation existed between the dose rate values obtained through estimation and personal measurement, and estimated annual doses ranged from 0.5 to 32 mGy/y. Each of the dosimetric subjects carried also an optically stimulated luminescence dosimeter (OSLD) for about one month in September 2005, but a few values obtained by these measurements deviated widely from those obtained by one-day measurements with EPDs and those estimated by environmental dosimetry. This deviation might have been due to the fact that these OSLDs were left behind somewhere in houses. Hence, the observed dose values depended heavily on the place where dosimeters had been left, because of the non-uniform distribution of Ra-226 contained in building materials as well as the structure of the house and the existence of shields.
- 著者
- Miroslaw JANIK Shinji TOKONAMI
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.44, no.1, pp.116-121, 2009 (Released:2010-10-08)
- 参考文献数
- 34
- 被引用文献数
- 7
In Poland there are some special regions in which the natural background radiation is obviously higher than in neighboring areas. This paper presents a review of recent radiation measurements taken in the Polish environment. Natural sources including radon, potassium, uranium and thorium as well as artificial sources such as cesium are characterized. Their contribution to the annual radioactivity dose rate is described.
3 0 0 0 OA ICRP Publication 52 について
- 著者
- 古賀 佑彦
- 出版者
- 日本保健物理学会
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.24, no.1, pp.39-42, 1989 (Released:2010-02-25)
- 参考文献数
- 8
2 0 0 0 OA 海洋における放射性物質の生物濃縮
- 著者
- 鈴木 譲
- 出版者
- Japan Health Physics Society
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.29, no.2, pp.134-137, 1994 (Released:2010-02-25)
- 参考文献数
- 21
2 0 0 0 OA 放射性物質の誘導排水濃度基準に関する一考察
- 著者
- 岡村 泰治 小林 克彦 草間 朋子 吉澤 康雄
- 出版者
- Japan Health Physics Society
- 雑誌
- 保健物理 (ISSN:03676110)
- 巻号頁・発行日
- vol.19, no.3, pp.231-237, 1984 (Released:2010-02-25)
- 参考文献数
- 10
The values of Derived Limits of Effluent Water Concentration, (DLEC)w, have been estimated in accordance with the principles of the recent recommendations of the International Commission on Radiological Protection.The (DLEC)w's were derived from the Annual Limits on Intake for individual members of the public (ALIp), considering realistic models of exposure pathways and annual intake rates of foods. The ALIp's were decided after consideration of body organ mass and other age dependent parameters. We assumed that the materials which brought exposure to the public were drinking water, fish, seaweed, invertebrate and seashore. The age dependence of annual intake rate of food might be proportional to a person's energy expenditure rate. The following results were obtained. Infants were the critical group of the public at the time of derivation of (DLEC)w. The ALIp's for the infants were about one-hundredth of those for workers and their (DLEC)w's were about one-third of those for the adult members of the public.
