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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 35, Issue 4 - Dec 2010
Volume 35, Issue 3 - Sep 2010
Volume 35, Issue 2 - Jun 2010
Volume 35, Issue 1 - Mar 2010
Selecting the target year
Environmental Radiation Protection in Medical Institutions
Han, Eun-Ok ; Dong, Kyung-Rae ;
Journal of Radiation Protection and Research, volume 35, issue 3, 2010, Pages 91~95
The study aimed to measure the levels of radiation protection for radiologists in medical institutions in three environmental categories (physical, administrative and social) and to establish a data base which can be used to increase awareness of environmental radiation protection in medical institutions within Korea. The study surveyed 10% of radiologists working in radiology departments in medical institutions which are supervised by the National Dose Registry overseen by the Korean Food and Drug Administration(KFDA). This study found that the level of environmental radiation protection was higher in the capital area and in larger hospitals. On the other hand, the study shows environmental radiation protection was lower in the Youngnam area and in clinics. Results from the questionnaires indicate the level of environmental radiation protection was higher when radiologists were given an individual dosimeter but lowest when the radiation protection apron quality test was conducted. Environmental radiation protection is an important factor for radiologists to conduct activities in a safe and protected environment. However, this study shows there are differences in the level of environmental radiation protection in medical institutions and location within Korea. In particular, the level of environmental radiation protection was lower in clinics, appropriate intervention strategies befitting these conditions are needed based on medical institution classification and location in order to improve the level of environmental protection.
Status of Medical Exposure in Korea
Yoon, Sei-Chul ; Kim, Il-Han ; Kim, Sung-Hoon ; Kim, Hyuck-Joo ;
Journal of Radiation Protection and Research, volume 35, issue 3, 2010, Pages 96~98
Medical use of radiation is increasing in recent times and its influence on the population creates almost the same amount of annual natural background radiation in industrialized countries in particular. Thus, medical radiation has become a social issue. This paper is a brief report on the status of medical exposure in Korea by way of consulting from the radiation-related medical societies in Korea.
RABBIT HEATING BY MICROWAVE EXPOSURE AT VARIOUS AMBIENT TEMPERATURES
Kolganova, Olga I. ; Zhavoronkov, Leonid P. ; Petin, Vladislav G. ; Kim, Jin-Kyu ;
Journal of Radiation Protection and Research, volume 35, issue 3, 2010, Pages 99~104
The potential ability of environmental temperature to enhance the effect of microwave radiation (7 GHz) was experimentally studied for rabbit heating after simultaneous application of both agents. The tested ambient temperatures (30 and
) didn't exert a considerable influence upon rabbit heat homeostasis after the used duration of exposure (3 hours and 15 minutes, correspondingly). The synergistic interaction of microwave irradiation and ambient temperature was demonstrated for rabbit heating. Power flux density of microwave irradiation was shown to be a determinant of the synergistic interaction effectiveness. For the fixed ambient temperature (
), the synergism was shown to be observed only within a definite power flux density (
), inside of which there was an optimal intensity (
), which maximized the synergistic effect. Any deviation of the power flux density from the optimal value resulted in a reduction of the synergy. It is concluded that any assessment of the health or environmental risks should take into account the synergistic interaction between ambient temperature and microwave radiation.
Uranium Activity Analysis of Soil Sample Using HPGe Gamma Spectrometer
Lee, Wan-No ; Kim, Hee-Reyoung ; Chung, Kun-Ho ; Cho, Young-Hyun ; Kang, Mun-Ja ; Lee, Chang-Woo ; Choi, Geun-Sik ;
Journal of Radiation Protection and Research, volume 35, issue 3, 2010, Pages 105~110
Using N-type HPGe gamma spectrometer, uranium analysis technique of soil sample is developed where the chemical preprocessing is not a necessity. The results of uranium activities using the method presented in this paper were compared with those results with conventional alpha spectrometer and two results were similar from within uncertainty range. Therefore, this new method will be applied in uranium activity analysis of soil sample.
A Study for Establishment of Diagnostic Reference Level of Patient Dose in Skull Radiography
Lee, Jung-Eun ; Jeong, Jin-Baek ; Lee, Hyun-Koo ; Lim, Chun-Il ; Son, Hye-Kyung ; Jin, Hyun-Mi ; Kim, Byung-Woo ; Yang, Hyun-Kyu ; Kim, Hyeog-Ju ; Kim, Dong-Sup ; Lee, Kwang-Yong ;
Journal of Radiation Protection and Research, volume 35, issue 3, 2010, Pages 111~116
Ionizing radiation is most widely used for X-Ray examination among all artificial radiation exposure, it takes up the largest proportion. Even in Korea, the medical exposure by diagnostic X-Ray examination takes up 17.4% of all radiation exposure. It takes up 92% even in artificial radiation exposure. There were 111,567 cases X-Ray radiography for skull diagnosis in 2007, which is 3% annual increase since 2004. Thus, It is need to establish the diagnostic reference level and the medical facilities as a diagnostic reference level to optimize radiation protection of the patients and to reduce the doses of X-ray. In this paper, we survey patient dose on skull radiography - collected from 114 medical facilities nationwide by using human phantom and glass dosimeter. When the patient dose for the skull radiography was measured and evaluated to establish the diagnostic reference level, 2.23 mGy was established for posterior-anterior imaging and 1.87 mGy for lateral imaging was established. The posterior-anterior skull radiography entrance surface dose of 2.23 is less than the guidance level of 5 mGy from the global organizations such as World Health Organization (WHO) and International Atomic Energy Agency (IAEA), and 1.87 mGy for the lateral skull imaging is less than the guidance level of 3 mGy, which is guided by the global organizations such as World Health Organization (WHO) and International Atomic Energy Agency (IAEA).
The Improved Method for Precise Determination of Pu Isotope Ratio using MC-ICP-MS
Yim, Seong-A ; Han, Eun-Mi ; Chae, Jung-Seok ; Yun, Ju-Young ;
Journal of Radiation Protection and Research, volume 35, issue 3, 2010, Pages 117~123
Plutonium is by far the most important of the transuranic elements which have been released into the environment due to radio-toxicity and long term radiation effects on humans. And Pu isotope ratio (
) is of great interest because this ratio is used as a fingerprint for different sources. Mass spectrometry has been used as an useful atom counting technique with several advantages over decay counting techniques for the determination of Pu isotopes. It enables a determination of Pu isotope ratio in the environmental samples with a low detection limit and a short determination time. An ICP-MS is the representative mass spectrometry for Pu determination. In this study, the precision of
isotope ratio was improved by using 4 multiple ion counters of MC-ICP-MS. The detection limit of
), respectively. The relative standard deviation of
isotope ratio was less than 1 % in trace level. The various reference materials (seawater, soil and sediment) were analyzed to verify this method and their analytical results were in good agreement with the certified (or recommended value) value.
Comparison Study on Low Energy Physics Model of GEANT4
Park, So-Hyun ; Jung, Won-Gyun ; Suh, Tae-Suk ;
Journal of Radiation Protection and Research, volume 35, issue 3, 2010, Pages 124~134
The Geant4 simulation toolkit provides improved or renewed physics model according to the version. The latest Geant4.9.3 which has been recoded by developers applies inserted Livermore data and renewed physics model to the low energy electromagnetic physics model. And also, Geant4.9.3 improved the physics factors by modified code. In this study, the stopping power and CSDA(Continuously Slowing Down Approximation) range data of electron or particles were acquired in various material and then, these data were compared with NIST(National Institute of Standards and Technology) data. Through comparison between data of Geant4 simulation and NIST, the improvement of physics model on low energy electromagnetic of Geant4.9.3 was evaluated by comparing the Geant4.9.2.