• 한국치위생학회지
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• 제16권2호
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• pp.205-214
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• 2016

Objectives: The purpose of the study is to investigate the current status and radiographic safety management in Korea. Methods: A self-reported questionnaire was completed by 200 dental hygienists in Jeonbuk province from September 1, 2014 and October 31, 2014. The questionnaire consisted of general characteristics of the subjects, radiation knowledge, radiation safety management, and radiation exposure anxiety. Data were analyzed using SPSS 18.0 program. Results: Duration of clinical experience(r=0.142) and number of daily radiation shot(r=0.145) showed a positive correlation to radiation safety management, and a nrgative correlation to use of intraoral films and digital devices(r=-0.587). A logistic regression analysis was performed in order to evaluate the influence on radiography knowledge. The results showed that the factors had significant influences on the age group over 41 years old(OR 7.25; 95% CI 1.30-40.43) and those who took a position above team leader(OR 0.23; 95% CI 0.59-0.90). Conclusions: It is very important to have the safety management toward dental intraoral imaging and radiograpgic shot in the dental hygienists. Continuous efforts should be emphasized on radiographic safety management and behavior.

• 대한치과의사협회지
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• 제52권3호
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• pp.147-152
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• 2014

Recently the patient exposure by medical and dental x-ray examination has grown rapidly and diagnostic radiology represents the largest source of man-made radiation. For the patient protection, the principle of justification and optimization should be followed. All the radiographic examinations have to show a potential benefit to the patient weighing against the potential risk. After they are justified, the radiographic exposure should be kept as low as reasonably achievable, taking into account economic and social factors. For the safe use of radiation in dentistry, the radiation safety management in accordance with the legislation is important. The present status and the future of radiation safety management in dental radiology in Korea and other country will be discussed.

• 대한안전경영과학회지
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• 제6권3호
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• pp.303-309
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• 2004

Many system devices for fluoroscopic and general X-ray studies in diagnostic radiographic system have been being changed from analog mode to digital mode. In addition, among diagnostic imaging and radiologic examinations, fluoroscopic studies that requires functional diagnosis is being widely used. The video recording method of fluoroscopic studies has been useful in functional image diagnosis and dynamic image observation, but the utility of its image quality is being reduced because of limitation in setting play segments of the video player, inconvenience of play, difficulties in preserving reproduced images, the change of image quality, etc. In order to complement these shortages, it is necessary to facilitate access to patient diagnosis information such as storing, editing and sharing functional diagnosis images in response to the trend of the digitalization of digital radiographic & fluoroscopic system(DRF). Thus this study designed and implemented a device of storing functional dynamic images real time using a computer rather than existing video recording, aiming at contribution to functional image diagnosis.

• 한국방사선학회논문지
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• 제17권4호
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• pp.565-572
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• 2023

본 연구에서는 국내 공공 부문에서 실시하고 있는 의료기관 평가 중 영상검사와 관련된 현황을 살펴보고 개선 방향을 제시하고자 하였다. 의료기관 평가 중 영상검사와 관련된 주요 평가는 의료기관 인증평가와 영상검사 적정성 평가가 있으며, 의료기관 인증평가에서는 영상검사 운영과정, 정확한 결과 제공, 안전관리 절차 준수 등을 평가하고 있다. 영상검사 적정성 평가에서는 인력, 장비와 관련된 구조 지표, 환자평가 실시율, 피폭 저감 프로그램 등이 포함되어 있었다. 하지만 좀 더 안전하고 질 높은 영상검사를 위해서는 의료기관의 인증평가 참여율을 높이는 방안 마련이 필요하며, 영상검사 적정성 평가의 인력지표 개선과 인센티브 지급에 대한 고려도 필요하다. 마지막으로 국가 차원의 방사선 노출 통합관리도 함께 병행되어야 할 것이다.

• International Journal of Oral Biology
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• 제46권4호
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• pp.168-175
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• 2021

To investigate the perceptions and attitudes of dental hygienists toward radiation safety management in Korea. A total of 800 dental hygienists were randomly selected for an anonymous survey, and 203 of them participated. The questionnaire items included the following: sex, career period, type of installed radiographic equipment, recognition of the diagnostic reference level (DRL), participation in radiation safety education, and attitudes toward radiation protection for both patients and dental hygienists. The participants were divided into two groups according to their years of experience (< 10 years versus ≥ 10 years). The difference between the groups was investigated according to frequency distribution. Fisher's exact test or Pearson's chi-square (𝛘²) test was used as appropriate. A regression analysis was performed to investigate the impact of wearing a thyroid collar for personnel protection during patient radiation exposure. The types of installed radiographic equipment included panoramic radiography (96.1%), cephalometric radiography (76.9%), intraoral radiography (72.9%), and cone-beam computed tomography (69.5%). Significant differences were observed in the learning pathway for the DRL (Fisher's exact test, p < 0.05), satisfaction with radiation safety education (Pearson's 𝛘² test = 5.3975, Pr = 0.02), and use of personnel radiation monitoring systems (Pearson's 𝛘² test = 18.1233, Pr = 0.000) between the groups. Significant differences were also observed in personnel protection using a thyroid collar and patient protection during panoramic radiography (odds ratio = 14.2). Dental hygienists with more than 10 years of experience were more satisfied with radiation safety education and more interested in radiation monitoring. Considering career experience, customized, continuous, and effective radiation safety management education should be provided.

• 대한안전경영과학회지
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• 제6권3호
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• pp.87-97
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• 2004

The National Health Insurance Act, the Industrial Health Act and the School Health Act require chest radiography at least once a year. In chest radiographic examination, most group examinations use indirect X-ray primarily aiming at diagnosing diseases and enhancing people's health. This study purposed to minimize radiation exposure dose by comparing it between direct and indirect chest X-ray studies. According to the result of comparing and analyzing radiation exposure dose, the average incident dose and penetrating dose were 0.929μGy and 0.179μGy respectively in direct chest X-ray and 6.807μGy and 1.337μGy in indirect chest X-ray In order to minimize radiation exposure dose at direct and indirect chest X-ray, indirect X-ray should be excluded from group examination if possible. Moreover, it is necessary to control the quality of equipment (Q/A & Q/C) systematically and to avoid using unqualified equipment in order to reduce radiation exposure dose.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제21권1호
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• pp.41-47
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• 1999

The route of bony invasion and spread pattern of tumor in the mandible are important in management of gingival cancer. Ten patients with gingival cancer involving mandibular body region were operated by composite resection. The radiographic and histopathologic features of the mandibular invasion and spread were analysed and compared. Our results showed that histopathologic extent of tumor invasion were greater than the radiographic prediction, especially in width of the tumor. And the pattern of bony invasion in the body area was mostly found in transmedullary spread rather than perineural spread. The vertical involvement in the mandibular body with tumor was evaluated. It indicated that if a oncologic surgeon was to ensure an adequate safety margin for extirpation of tumor, in most cases, the maintenance of the mandibular continuity is difficult. If the mandibular involvement by gingival cancer was identified radiographically and clinically, segmental mandibulectomy was required for the adequate safety margin, in consideration of the spread pattern in the body area.

• 한국산학기술학회논문지
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• 제19권6호
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• pp.432-439
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• 2018

본 연구는 치과위생사를 대상으로 방사선 관리에 대한 지식, 태도, 안전관리 행위, 방사선 피폭 불안감을 분석하고 이에 영향을 미치는 요인들을 분석함으로써 방사선 안전 관리 수준을 향상하고 방사선 취급에 대한 올바른 인식 전환과 불안감을 줄이는 방안을 도출하고자 연구하였다. 연구기간은 2017년 9월 10일부터 10월 31일까지 전라북도에 근무하는 치과위생사 280명을 대상으로 SPSS 12.0 프로그램을 사용하여 빈도, 기술통계, 다중회귀분석을 실시하여 분석하여 다음과 같은 결과를 얻었다. 방사선 질 관리에 대한 지식 정도의 평균은 8.07 였고, 정답률은 75.3% 였다. 태도 정도는 96.1%가 긍정적인 태도를 보였으며, 방사선 안전관리 행위는 촬영자는 4.11 였고, '방사선 촬영 시 항상 TLD(개인선량계)를 착용한다'는 4.58 로 가장 높았다. 환자 방사선 안전관리 행위는 3.86 였고, '방사선촬영 전 가임기 여성의 임신 여부를 확인한다'는 4.69 로 가장 높았다. 방사선 피복 뷸안감은 3.86 였고, '임신 중 일 때 태아의 건강 문제로 염려된다'는 4.13로 가장 높았다. 방사선 피폭 불안감에 영향을 미치는 요인으로는 방사선 안전관리 행위가 낮을수록, 연령이 낮을수록, 방사선 촬영경력이 낮을수록, 최종학력이 높을수록, 월 소득이 많을수록, 직위가 높을수록 유의한 영향을 미치는 것으로 나타났다(p<0.05). 이상의 연구결과를 토대로 치과위생사는 방사선 질 관리에 대한 지식, 태도, 안전관리 행위는 높았으나, 방사선 피폭 불안감은 높은 불안감을 가지고 있어 방사선 안전 관리 수준을 향상시켜 방사선 피폭 불안감을 줄일 수 있는 방안 마련이 이루어져야 할 것으로 사료된다.

• 대한방사선기술학회지:방사선기술과학
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• 제45권3호
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• pp.213-223
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• 2022

Although the number of computed tomography(CT) is increasing every year, it is insufficient to establish appropriate workload calculation standards of radiologic technologist to provide optimal medical services to patients, such as patient safety management and infection management. The purpose of this study is to present guidelines for calculating the appropriate workload of radiologic technologist by analyzing the work flow of CT procedures and the time required for CT examination in major hospitals. As for the study subjects and methods, the appropriate process for each step of CT examination was investigated to systematically present the process and time required for the actual examination, and the CT procedure time of 104,105 adult patients and 465 pediatric patients under the age of 6 were analyzed. For the time required, data according to the use of contrast medium, procedure type, and adult/child were collected and compared. The test time of CT examination using contrast medium took about 13 minutes when one radiologic technologist worked and about 9 minutes when two radiologic technologists worked. The time required for the procedures were statistically significant depending on the presence or absence of contrast medium, multi-phase procedure, and patient age (considering pediatric patients). As a result, in order to thoroughly perform patient safety and infection management, the appropriate workload increased by about 40% when there were two radiologic technologists. The limit workload was an average of 32 people per day with one radiologic technologist per 15 minutes, and 48 people per day with two radiologic technologist per 10 minutes. This is a marginal workload, and in the case of procedures that require more time to acquire radiographic images, the interval between reservations should be widened.

• 대한방사선기술학회지:방사선기술과학
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• 제45권2호
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• pp.159-164
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• 2022

The study developed a radiation dose measurement program in the radiology laboratory to measure how much exposure the students are exposed to during the radiology class, to request for the improvement and the revision of the current Nuclear Safety Act. The experimental program is shown in the following figure, and experiments were conducted to determine the degree of radiation exposure in the control room with a lead gown at a distance of 1 m, 2 m, and 1 m, and in a control room with a radiographic lead glass wall. The duration of the experiment was 3 months from April to June, when radiation imaging practice classes were conducted, and 128 hours of imaging practice per month were conducted. In order to find out the dose of radiation dose during radiology imaging practice class, the experiment was carried out from April to June for 3 months, and according to the program, the results of exposure dose were 0.34 mSv at 1 m distance, 0.01 mSv at shielding of lead gown at 1 m distance, 0.16 mSv at 2 m distance, and 0.01 mSv at control room with radiation lead glass wall. The exposure dose from the test results was much below the annual general public limit dose of 1 mSv. The restriction on the operation of the radiation equipment in the practice of the students is a regulation that infringes the right of students to learn, and amendments or exemptions of Nuclear Safety Act should be enacted to ensure that it does not violate the fundamental right to learn for students in radiology.