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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Radiation Protection and Research
Journal Basic Information
Journal DOI :
Korean Association for Radiation Protection
Editor in Chief :
Volume & Issues
Volume 30, Issue 4 - Dec 2005
Volume 30, Issue 3 - Sep 2005
Volume 30, Issue 2 - Jun 2005
Volume 30, Issue 1 - Mar 2005
Selecting the target year
Assessment of the terrestrial gamma radiation dose in Korea
Choi, Seok-Won ; Yun, Ju-Yong ; Kim, Chang-Kyu ; Rho, Byung-Hwan ; Lee, Jong-Seong ;
Journal of Radiation Protection and Research, volume 30, issue 4, 2005, Pages 161~165
The gamma-ray dose rates in air at 233 locations in Korea have been determined. The contribution to the gamma-ray dose rates in air due to the presence of
is as follows: 47.3%
. The mean gamma-ray dose rate theoretically derived from
. This corresponds to an annual effective dose of
and an annual collective dose of 18900 person-Sv for all provinces under study. The results have been compared with other global radiation dose.
Distribution and characteristics of radioactivity
and radiation in Korea
Yun, Ju-Yong ; Choi, Seok-Won ; Kim, Chang-Kyu ; Moon, Jong-Yi ; Rho, Byung-Hwan ;
Journal of Radiation Protection and Research, volume 30, issue 4, 2005, Pages 167~174
The concentrations of natural and artificial radionuclides in soil and gamma ray dose rate in air at 233 locations in Korea have been determined. The national mean concentrations of
in soil were
, respectively. The mean gamma-ray dose rate at 1 m above the ground was
concentration had highly significant correlation with organic matter content and cation exchange capacity.
concentration had slightly coherent with pH. The results have been compared with other global radioactivity and radiation measurements.
Occupational Radiation Exposure in Korea: 2002
Jeong, Je-Ho ; Kwon, Jeong-Wan ; Lee, Jai-Ki ;
Journal of Radiation Protection and Research, volume 30, issue 4, 2005, Pages 175~183
Dose distribution of Korean radiation workers classified by occupational categories was analyzed. Statistics of the occupational radiation exposure(ORE) in 2002 of the radiation workers in diagnostic and dental radiology were obtained from the Korea Food and Drug Agency(KFDA) who maintains the database for individual radiation dose records. Corresponding statistics for the rest of radiation workers were obtained by processing the individual annual doses provided by the Korea Radioisotope Association(KRIA) after deletion of individual information. The ORE distribution was classified in term of 28 occupational categories, annual individual dose levels, age groups and gender of 52733 radiation workers as of the year of 2002. The total collective dose was 66.4 man-Sv and resulting average individual ORE was 1.26 mSv. Around 80% of the workers were exposed to minimal doses less than 1.2 mSv. However, it appeared that the recorded doses exceeded 20 mSv for 43 workers in the industrial radiography and for 147 workers in the field of radiology. Particularly, recorded doses of 23 workers in radiology exceeded the annual dose limits of 50 mSv, which is extraordinary when the working environment is considered. It is uncertain whether those doses are real or caused by careless placing of dosimeters in the imaging rooms while the X-ray units are in operation. No one in the workforce of 16 operating nuclear power plant units was exposed over 20 mSv in 2002. Number of workers was the largest in their 30's of age and the mean individual dose was the highest in their 20's. Women were around 20% of the radiation workers and their average dose was around one half of that of man workers.
Medical Exposure of Korean by Diagnostic Radiology and Nuclear Medicine Examinations
Kwon, Jeong-Wan ; Jeong, Je-Ho ; Jang, Ki-Won ; Lee, Jai-Ki ;
Journal of Radiation Protection and Research, volume 30, issue 4, 2005, Pages 185~196
Although medical exposure from diagnostic radiology procedures such as conventional x-rays, CT and PET scans is necessary for healthcare purposes, understanding its characteristics and size of the resulting radiation dose to patients is much of worth because medical radiation constitutes the largest artificial source of exposure and the medical exposure is in a trend of fast increasing particularly in the developed society. Annual collective doses and per-caput effective doses from different radiology procedures in Korea were estimated by combining the effective dose estimates per single medical procedure and the health insurance statistics in 2002. Values of the effective dose per single procedure were compiled from different sources including NRPB reports, ICRP 80, MIRDOSE3.1 code and independent computations of the authors. The annual collective dose reaches 27440 man-Sv (diagnostic radiology: 22880 man-Sv, nuclear medicine: 4560 man-Sv) which is reduced to the annual per-caput effective dose of 0.58 mSv by dividing by the national population of 47.7 millions. The collective dose is far larger than that of occupational exposures, in the country operated 16 nuclear power plants in 2002, which is no more than 70 man-Sv in the same year. It is particularly noted that the collective dose due to CT scans amounts 9960 man-Sv. These results implies that the national policy for radiation protection should pay much more attention to optimization of patient doses in medicine.
Gene Expression Patterns of Spleen, Lung and Brain with Different Radiosensitivity in C57BL6 Mice
Majumder Md. Zahidur Rahman ; Lee, Woo-Jung ; Lee, Su-Jae ; Bae, Sang-Woo ; Lee, Yun-Sil ;
Journal of Radiation Protection and Research, volume 30, issue 4, 2005, Pages 197~208
Although little information is available on the underlying mechanisms, various genetic factors have been associated with tissue-specific responses to radiation. In the present study, we explored the possibility whether organ specific gene expression is associated with radiosensitivity using samples from brain, lung and spleen. We examined intrinsic expression pattern of 23 genes in the organs by semi-quantitative RT-PCR method using both male and female C57BL/6 mice. Expression of p53 and p21, well known factors for governing sensitivity to radiation or chemotherapeutic agents, was not different among the organ types. Both higher expression of sialyltransferase, delta7-sterol reductase, leptin receptor splice variant form 12.1, and Cu/Zn superoxide dismutase (SOD) and lower expression of alphaB crystalline were specific for spleen tissue. Expression level of glutathione peroxidase and APO-1 cell surface antigen gene in lung tissue was high, while that of Na, K-ATPase alpha-subunit, Cu/ZnSOD, and cyclin G was low. Brain, radioresistant organ, showed higher expressions of Na, K-ATPase-subunit, cyclin G, and nucleolar protein hNop56 and lower expression of delta7-sterol reductase. The result revealed a potential correlation between gene expression patterns and organ sensitivity, and Identified genes which might be responsible for organ sensitivity.
Effect of Cytosine Arabinoside, 3-Aminobenzamide and Hydroxyurea on the frequencies of radiation-induced micronuclei and aneuploidy in human lymphocytes
Cho, Yoon-Hee ; Kim, Yang-Jee ; Kang, Chang-Mo ; Ha, Sung-Whan ; Chung, Hai-Won ;
Journal of Radiation Protection and Research, volume 30, issue 4, 2005, Pages 209~219
This study was carried out to examine the effect of the DNA repair inhibitors, Cytosine Arabinoside(Ara C), 3-Aminobenzamide(3AB) and Hydroxyurea(HU) on the frequencies of radiation-induced micronuclei(MNi) and aneuploidy. Irradiated lymphocytes(1-3Gy) were treated with DNA repair inhibitors, Ara C, 3AB and HU for 3 hours and CBMN assay - FISH technique with DNA probe for chromosome 1 and 4 was performed. The frequencies of x-ray induced MNi and aneuploidy of chromosome 1 and 4 were increased in a dose-dependent manner. Ara C, 3AB and HU enhanced the frequencies of radiation-induced MNi and the frequencies of radiation-induced aneuploidy of chromosome 1 and 4 were enhanced by HU and Ara C while no effect was observed by 3AB. The frequency of radiation-induced aneuploidy of chromosome 1 was higher than that of chromosome 4. These results suggest that there are different mechanisms involved in the formation of MNi and aneuploidy by radiation.
Knowledges, consciousnesses, and attitudes of some university students on the use of radiations
Han, Eun-Ok ; Park, Byung-Sub ;
Journal of Radiation Protection and Research, volume 30, issue 4, 2005, Pages 221~230
This study attempts to extract certain directions for the education program to provide right information by investigating knowledges, consciousnesses, and attitudes of some university students. They have a high level of knowledges among average persons on the use of radiations in order to recognize the radiation safety in daily lives including the change in national recognitions for radiations safety that is consistent with the situation in these days. The survey was performed for 528 university students from Oct. 10 to Oct. 15, 2005. The results of this survey can be summarized as follows; students who didn't get educations for the use of radiations were recorded as 415 students (80.7%) in which the reason that they didn't get such educations was there were no chances to receive the education' as 265 students (77.9%). The basic knowledge on the use of radiations was presented as a low level of
points based on the sum of 15 points, and the consciousness on the use of radiations was investigated as
points based on the sum of 5 points. In addition, the attitude on the use of radiations was investigated as
points based on the sum of 5 points.
Measurement of ECF for
Lim, Kil-Sung ; Kim, Jang-Lyul ;
Journal of Radiation Protection and Research, volume 30, issue 4, 2005, Pages 231~236
Dosimeters are manufactured from same process in the manufacturer but the deviation of TL raw counts exists among the dosimeters. TL raw counts are also gradually degrade due to multiple readings and physical abuse. ECF (Element Correction Factor) correct the degradation and deviation of TL raw counts to the average TL raw counts of reference dosimeters. Procedures for producing ECF of thermoluminescent dosimeters were described In detail. ECFs of 319 reference, control and field dosimeters were measured three times and average of three ECF values was calculated. Also, % CV(Coefficient of Variation) of three ECF values was calculated to verify ECF. ECF & % CV distributions for the field and control dosimeters are presented. TL raw counts of field dosimeters, being used about 6 times for the past 3 years, were almost unchanged, but those of control dosimeters being used more frequently, were degraded about 4.7 %.
Combining of GIS and the Food Chain Assessment Result around Yeonggwang Nuclear Power Plant
Kang, H.S. ; Jun, I. ; Keum, D.K. ; Choi, Y.H. ; Lee, H.S. ; Lee, C.W. ;
Journal of Radiation Protection and Research, volume 30, issue 4, 2005, Pages 237~245
The distribution of radionuclides in soil and plants were calculated, assuming an accidental release of radionuclides from Yeonggwang Nuclear Power Plant. The results which show the concentration change with time and regions were displayed by GIS. GIS Included the commercial program, ArcView(ESRI), and a basic digital map of 1:5000 scale for 30km by 30km area around Yeonggwang Nuclear Power Plant. The target material was
in soil around Yeonggwang area. Given denosited
concentrations, ECOREA-II code computed the
concentration of the soil and the plant in the area divided by 16 azimuth, 480 unit cells in total in which the concentrations also varied with time. The results were introduced into the attributed data of previously designed polygon cells in ArcView. In order to display the concentration change with time by monotonic color, the RGB value for ArcView color lamp was controlled. This display is useful for the public to understand the concentration change of radionuclide around Yeonggwang area definitely.
Strategic Approach for the Promotion of an Active Participation in the IAEA Program in the Field of Occupational Radiation Protection
Kim, Kyoung-Pyo ; Chang, Si-Young ; Han, Moon-Hee ;
Journal of Radiation Protection and Research, volume 30, issue 4, 2005, Pages 247~252
The main idea of this paper is to present the general attributes of the current IAEA programs and their prospects in the arena of occupational radiation protection, thus responding to a need to attain a consolidated understanding of the Agency's programs for an effective and efficient deployment of the respective national R&D projects in Korea. In addition, the considerable and beneficial benefits from a participation in the IAEA programs have been analyzed and their immediate relevance has been emphasized. A strategy for the enhancement of an active participation in the program and its efficient implementation has also been established. It is expected that the suggested recommendations such as the long term strategy and the relevant guidelines will be helpful in establishing a nuclear policy for the further development of the international cooperative projects in the future.