著者

安齋 育郎

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.10, no.1, pp.41-44, 1975 (Released:2010-02-25)

参考文献数

12

被引用文献数

1

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

著者

遠藤 章

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.3, pp.246-249, 2011 (Released:2012-07-28)

参考文献数

5

被引用文献数

1

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.

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

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

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.

著者

中嶌 純也 廣田 誠子 辻 智也 渡邊 裕貴 迫田 晃弘 小林 紀子

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.58, no.1, pp.13-20, 2023-04-28 (Released:2023-07-12)

参考文献数

5

著者

川口 勇生

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.55, no.1, pp.23-31, 2020-04-01 (Released:2020-05-21)

参考文献数

43

---

An international framework for environmental radiation protection has been developed over the last few decades. From 2005 to 2017, the International Commission on Radiological Protection (ICRP) established a committee on environmental protection and published several reports. ICRP developed a protection framework which was based on the Reference Animals and Plants corresponding to the Reference Man in radiation protection of humans, and the Derived Consideration Reference Level which is the band of dose rates corresponding to the possibility of adverse effect of each animals and plants. The present review summarized the current state of the environmental protection system focusing on the activities of ICRP first and then of other international organizations. The current issues about environmental protection were also discussed.

著者

小佐古 敏荘

出版者

Japan Health Physics Society

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.32, no.1, pp.13-14, 1997 (Released:2010-02-25)

参考文献数

5

著者

清水 翔太 荒川 弘之 本田 城二 徳森 謙二 藤淵 俊王

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.56, no.4, pp.315-323, 2021-12-28 (Released:2022-03-01)

参考文献数

24

---

Clear radiation protection training and explanation tools for medical staff, patients, and caregivers during radiography are required. In this study, we developed visualization tool of scattered radiation distribution image of each X-ray room conditions. The 400 cases of X-ray room conditions were simulated using a Monte Carlo simulation code, Particle and Heavy Ion Transport code System (PHITS). The simulation conditions were (i) width and depth of the X-ray room (200 cm, 250 cm, 300 cm, 400 cm and 500 cm), (ii) opening or closing of the sliding door, (iii) direction of the X-ray table, (iv) X-ray posture, and (v) with or without protective clothing/shield. The scattered radiation distribution images were published on the Internet. The images are easily accessible on the Internet with selecting each radiography room condition. In radiation protection education, our tool can be used to (a) reduce radiation dose by keeping away from X-ray sources and scattered radiation sources, (b) shield scattered radiation by protective clothing and protective screens, and (c) prevent leakage of scattered radiation outside the room by closing the door of the radiography room. Our tool would improve the efficiency of radiation protection training for medical staff and alerting to patients and caregivers.

著者

佐藤 宏 高橋 千太郎 久保田 善久

出版者

Japan Health Physics Society

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.33, no.3, pp.298-301, 1998 (Released:2010-02-25)

参考文献数

18

被引用文献数

2

著者

Miroslaw JANIK

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.52, no.2, pp.114-121, 2017 (Released:2017-07-29)

参考文献数

64

被引用文献数

5 10

---

Indoor radon and thoron concentration measurements have been intensively carried out since the 1980s for assessment of radiation doses to workers and the general public. For example, the European Union countries established reference levels for indoor radon concentration in relation to national action plans to address long-term risk from radon exposures. Measurements done using a reliable method are the only way to investigate radon concentration levels. In order to ensure the quality of measurements, intercomparisons among laboratories are performed, as one verification method. The primary purpose of this paper is to provide a concise review of intercomparisons of radon and thoron monitors carried out by four institutions: NIRS (Japan), PHE (UK), BfS (Germany) and SURO (Czech Republic). The different measurement set-ups, evaluation methods and statistical treatments utilized by those institutions are described.

著者

小林 信義 山本 泰 明石 真言

出版者

Japan Health Physics Society

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.33, no.3, pp.323-330, 1998 (Released:2010-02-25)

参考文献数

44

被引用文献数

7 8

---

Prussian blue, a blue pigment, belongs to the ferric cyanoferrate (II) group. It binds univalent metal ions, and the binding activity depends on their ionic radius. Prussian blue is not absorbed from the gastrointestinal tract in a significant amount. The cesium is entero-enteric cycled through the intestine. Prussian blue inhibits the reabsorption of the cesium. Many studies using experimental animals showed that the oral administration of Prussian blue increases the rate of the fecal excretion of radiocesium which results in shortening its biological half life. The accident in Goiania, Brazil, in 1987 showed that Prussian blue effectively accelerated the removal of radiocesium without toxicity. In the present review, we describe Prussian blue from a biological aspect and discuss its clinical application for the decontamination of cesium in radiation accidents.

著者

藤通 有希 小佐古 敏荘 吉田 和生 浜田 信行

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.2, pp.97-103, 2013 (Released:2014-03-06)

参考文献数

25

被引用文献数

2 1 1

---

Radiation cataract has been classified as tissue reactions (formerly known as deterministic effects or non-stochastic effects) with a threshold dose. In 1984, the International Commission on Radiological Protection (ICRP) suggested the threshold dose of >8 Sv for vision-impairing cataracts in highly fractionated or protracted exposures. Such a threshold was used to recommend an occupational dose limit for the lens of 150 mSv/year in 1990 and 2007, but was reduced to 0.5 Sv in 2011 for all exposure scenarios irrespective of the rate of dose delivery. New threshold was determined on the basis of the limited human evidence, with various hypotheses not supported by the present knowledge of biological mechanisms. Examples of untested hypotheses include: (a) radiation cataract is a tissue reaction; (b) radiation damage to the large number of cells acts as a triggering event for radiation cataract; (c) detectable minor opacities progress into vision-impairing cataracts with time; and (d) the lower the dose, the longer the latency. This paper discusses the issues behind the scientific basis for the new threshold, and provides directions for future epidemiological and biological studies to establish the reasonably modeled dose-response relationship for radiation cataract.

著者

栗原 千絵子

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.54, no.1, pp.19-28, 2019-04-18 (Released:2019-09-03)

参考文献数

26

被引用文献数

2

---

The International Commission on Radiological Protection (ICRP) issued in February 2018 the Publication 138, titled “Ethical foundation of radiological protection system.” Although the ICRP has longtime recognized that ethics is an essential component of their radiological protection system, they have rarely described explicitly about the ethical foundation of the system. For this reason, the Commission established in 2012 the task group 94 to clarify and describe the ethical foundation of the system. As the result, the publication shows the process of evolution of the radiological protection system through 20th century until now, which leads to the identification of four core ethical values underpinning the system: beneficence and non-maleficence; prudence; justice; and dignity, along with related procedural values: accountability; transparency; and inclusiveness (stakeholder participation). As one of the authors of this publication, I will briefly introduce the developing process and the outlines of it, and additionally will provide a short summary of my experience of discussion through the workshops worldwide, concerning the nuclear accident of the Fukushima Daiichi Nuclear Power Station, as well as commonalities and diversities of Western and Asian perspectives of ethical core values.

著者

山根 靖弘

出版者

Japan Health Physics Society

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.25, no.3, pp.269-277, 1990 (Released:2010-02-25)

参考文献数

4

被引用文献数

1

著者

山口 恭弘

出版者

Japan Health Physics Society

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.29, no.3, pp.303-308, 1994 (Released:2010-02-25)

参考文献数

17

---

A new version of the dose calculation program, JEUNESSE-2 code, was developed which copes with external neutrons as well as photons. The code is capable of calculating the effective dose E for six different age groups: 0-, 1-, 5-, 10- and 15-year, and adult. The continuous function of the radiation weighting factor and the new tissue weighting factors, specified in ICRP Publication 60, were employed in the calculation of E. The Monte Carlo code MORSE-CG was incorporated in the JEUNESSE-2 code to calculate the transport of neutrons and produced γ-rays from a source to organs or tissues of the phantoms. A sample calculation for isotropic neutron incidence showed a significant age dependence of E. A comparison of the resultant E for adult males with other results gave good agreement.