• 대한방사선치료학회지
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• 제5권1호
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• pp.47-56
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• 1992

This report presents the date obtained in a 1990 survery al radiation oncology identified by KSTRO. This study was done to find out the status of current use of the radation thrapy equipments, personnels, utilization of equipments and orther problems in the field of radiation oncology department in korea. Our discussion addresses the areas of regional imbalance in the distribution of megavolage units, buying and selecting the units, improving of quality in radiation treatments. There is increasing use of linear accelerators, simulators, treatment planning computers. The use of Cp-60 units has been prohressively decreasing. And slowly improving, numbers of physicians, physicists, and technologists when compared with the 1988. A total of 51 megavoltage units were identified, giving a ratio of 1.88 technologists/ megavoltage units. We treat average 23.0 patients by megavoltage units.

• 한국방사선학회논문지
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• 제4권2호
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• pp.31-35
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• 2010

본 논문에서는 방사선학과 학부생을 대상으로 국제표준단위의 기본단위와 방사선 관련단위의 인지정도에 대하여 18문항으로 이루어진 설문지를 이용하여 조사하였다. 설문조사결과 약44%의 학생들이 기본단위인 kV에 대하여 오답을 표기하였으며, 약 28%의 학생들이 km에 대하여 오답을 표기하였다. 특히 단위와 숫자와의 관계에서는 약57%의 학생들이 오답을 선택하였다. 접두어인 메가와 기가에 대해서는 각각 22%, 20%가 오답을 선택하였다. 방사선 관련단위인 Sv 또한 약 30%의 학생이 오답을 선택하였다. 방사선 관련 국제단위에 대해서는 고학년일수록 인지도가 높았다. 단위에 대해 전문적인 교육을 받았는지의 여부에 대해서는 50%가 넘는 학생들이 교육을 받지 못하였다고 하였다. 이와 같은 결과로부터 국제표준단위에 대한 교육의 필요성을 확인하였다.

• Journal of Radiation Protection and Research
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• 제6권1호
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• pp.78-82
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• 1981

• 대한방사선치료학회지
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• 제3권1호
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• pp.55-61
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• 1989

• Journal of Radiation Protection and Research
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• 제20권3호
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• pp.201-213
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• 1995

비이온화방사선(NIR)에 대한 방어는 증가되는 관심의 주제가 되고 있지만, 방사선의 유형이나 그 적용간의 의존되는 아주 다른 개념의 사용은 이 분야에서의 통일된 방법의 자료편집에 어려움을 주고 있다. 이 논문의 주된 목적은 비 이온화방사선 방어의 목적으로 확실하게 사용하는 개념, 양, 단위 및 전문용어를 제공하기 위해서이다. 그 외에 방사선방어의 표준과 피폭한도를 양으로 나타내는데 사용되는 특별한 개념과 주어진 양들의 체계적인 분류와 비교를 요약하고 또 논하였다.

• 대한방사선기술학회지:방사선기술과학
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• 제42권6호
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• pp.461-467
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• 2019

The purpose of this study was to investigate the knowledge, attitudes and behaviors of radiation protection in operating room and intensive care unit nurses. The Participants for this study consisted of 240 nurses working in operating rooms and intensive care units of 7 general hospitals located in Busan, South Korea. The data were collected from Feb. 15 to Feb. 29, 2016. The study results were as follows. First, 72.9% of the nurses had never been educated for radiation safety. Second, the mean score of knowledge for radiation protection was 9.21. The knowledge score of radiation safety educated nurses is higher than uneducated of nurses(t=-5.67, p<.001). Third, The mean score of attitude towards radiation protection was 41.80. The attitude score of radiation safety educated nurses is lower than uneducated of nurses(t=0.02, p<.030). Fourth, the mean score of behavior for radiation protection was 32.57. The behavior score of radiation safety educated nurses is higher than uneducated of nurses(t=0.35, p=.001). Consequently, it was found that nurses had lack of the radiation safety education. Overall knowledge and behavior towards radiation protection was low. Therefore, it is necessary to raise awareness of radiation protection and to educate, manage, and improve processes to increasing compliance with protective measures against radiation.

• 치과방사선
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• 제10권1호
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• pp.57-61
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• 1980

In dental roentgenograph it is of mutual benefit to the patient and the dentist to use the minimum amount of radiation capable of producing roentgenograms with maximum interprtive informations. Recent increases in the number of diagnostic x-ray examinations made in this country have caused attention to be paid to the quantity of radiation delivered to the population and operator. The purposes of this study was to assess the quality of dental x-ray units, the amount of films, the average processing procedures and the radiation protection methods in korea. The results were as following: 1. Most of radiation generating system were used in low voltage such as 60Kvp, 10㎃. 2. High sensitivity films such as 'D' group of Kodak or Rinn were mainly used and average 14.7 films used per weeks. 3. Some dentists practiced visual processing technic in simple dark room, and others used instant films. 4. 68.26% of patient held the film themselves, but 27.30% were assisted by dentists film holding. 5. In radiation protection method, 7.85% of dentists had protection equipments such as protective barrier, 2.73% wore protective apron, 27.9% made it a rules to avoid beam, and 7.51% used to maintain a distance from the radiation source.

• Imaging Science in Dentistry
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• 제43권2호
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• pp.77-84
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• 2013

Purpose: This study aimed to provide comparative measurements of the effective dose from direct and indirect digital panoramic units according to phantoms and exposure parameters. Materials and Methods: Dose measurements were carried out using a head phantom representing an average man (175 cm tall, 73.5 kg male) and a limbless whole body phantom representing an average woman (155 cm tall, 50 kg female). Lithium fluoride thermoluminescent dosimeter (TLD) chips were used for the dosimeter. Two direct and 2 indirect digital panoramic units were evaluated in this study. Effective doses were derived using 2007 International Commission on Radiological Protection (ICRP) recommendations. Results: The effective doses of the 4 digital panoramic units ranged between $8.9{\mu}Sv$ and $37.8{\mu}Sv$. By using the head phantom, the effective doses from the direct digital panoramic units ($37.8{\mu}Sv$, $27.6{\mu}Sv$) were higher than those from the indirect units ($8.9{\mu}Sv$, $15.9{\mu}Sv$). The same panoramic unit showed the difference in effective doses according to the gender of the phantom, numbers and locations of TLDs, and kVp. Conclusion: To reasonably assess the radiation risk from various dental radiographic units, the effective doses should be obtained with the same numbers and locations of TLDs, and with standard hospital exposure. After that, it is necessary to survey the effective doses from various dental radiographic units according to the gender with the corresponding phantom.

• The Journal of Korean Physical Therapy
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• 제12권2호
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• pp.69-82
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• 2000

Physical therapists are exposured to radio-and microwave-frequency electromagnetic radiation by operating electrotherapy units. So there is few protection system in physical therapy room. Clinical pathology room and so on where various kins of electromagnetic instruments is used in hospital while protection failities like protection wall or protection glass is being used only in radiological room to reduce the damage of radiation. Acoording to Larsen's survey on female physical therapist in denmark. it was said that the percentage of congenital malfornation was $3.6\%$ and cadiac malformation made up $0.7\%$. It is likely that effect of electromagnetic fields on the result cannot be ruled out. Rita ouellet-Hellstron and Walter F. Steward insisted that the danger of abortion increase in the case of pregnant femeal physical therapist exposured to microwave diathermy. The intention of our study is arousing the necessity of microwave protection in P.T room and finding the proper method for physical therapist safe. The results of this study were as follows: 1. Each electrotherapy units are occurrenced the electromagnetic fields, and specially amply occurrenced in H.P,I.C.T 2 unit operating, M.W.D unit head on parallel, S.W.D unit head on parallel. all electrotherapy units are operating. 2. There were electric fields mount are consideration to species of electrotherapy units(p<.05). 3. There were magnetic fields mount are consideration to species of electrotherapy units(p<.05). 4. There were electric fields mount are consideration to distance of electrotherapy units(p<.05). 7. There were magnetic fields mount are consideration nut to distance of electrotherapy units(p>.05). 8. Before and after protection on magnetic fields mount are consideration to all distance(0m, 0.3m, 1m, 3m, 5m)(p<.05) 9. Before and after protection on electric fields mount are consideration to 0m, 1m, 3m distance(p<.05), and consideration not to 0.3m, 5m distance(p>.05) 10. After protection fellow the each electrotherapy units. distance, intencity to electromagnetic fields are reduced(p<.05).

• International Journal of Advanced Culture Technology
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• 제12권2호
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• pp.368-374
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• 2024

During an X-ray examination, the beam of radiation is dispersed in many directions. We believe that managing radiation dose is about providing transparency to users and patients in the accurate investigation and analysis of radiation dose. The purpose of measuring the radiation dose as a function of location is to ensure that medical personnel using the equipment or participating in the operating room are minimally harmed by the different radiation doses depending on their location. Four mobile diagnostic X-ray units were used to analyze the radiation dose depending on the spatial location. The image intensifier and the flat panel detector type that receives the image analyzed the dose by angle to measure the distribution of the exposure dose by location. The radiation equipment used was composed of four units, and measuring devices were installed according to the location. The X-ray (C-arm) was measured by varying the position from 0 to 360 degrees, and the highest dose was measured at the center position based on the abdominal position, and the highest dose was measured at the 90° position for the head position when using the image intensifier equipment. The operator or medical staff can see that the radiation dose varies depending on the position of the diagnostic radiation generator. In the image intensifier and flat panel detector type that accepts images, the dose by angle was analyzed for the distribution of exposed dose by position, and the measurement method should be changed according to the provision of dose information that is different from the dose output from the equipment according to the position.