의료용 디지털 영상 획득 엑스선발생장치 일반촬영 검사실 차폐 시설 성능 평가 = Performance evaluation of shielding facilities in general radiography laboratory for medical digital image acquisition X-ray generator

국문 초록 (Abstract)

일반 촬영 영상 검사는 엑스선 발생장치를 이용하여 방사선을 인체에 투과시켜 그 결과를 컴퓨터 모니터에 영상화하여 생체내의 변화나 그 정도를 추정하고 해부학적 구조를 이해하는데 중요한 정보를 제공한다. 본 연구에서는 누설선량을 적산하여 측정할 수 있는 유리선량계를 사용하여 일반촬영검사실 방사선 방어시설 차폐벽, 차폐문, 환자보기 창 등에 대한 성능을 평가하였다. 방사선 누설선량 측정 위치는 방사선발생장치의 위치를 고려하여 바닥에서 150 – 170 cm 에 설치하여 측정을 하였다. 2023년 08월부터 2024년 1월 까지 15개 의료기관에서 유리선량계를 이용하여 1개월간 적산선량을 측정한 후 3개월로 환산하여 평가 분석을 하였다. 검사실 환자 출입구 쪽 방어벽 외측에서 누적 누설선량 값은 최대 2.10 mSv, 평균 0.24 mSv, 측정대상 15개 의료기관 중 1개 의료기관에서 일본 법적선량한도 기준인분기당 1.3 mSv을 초과하여 계측되었다. 환자보기창 성능을 평가하기 위한 누적 누설선량 값은 최대 0.59 mSv, 평균 0.12 mSv로 측정대상 15개 의료기관 중 5개 의료기관에서 누설선량이 검출되었다. 이러한 연구결과로 국민 건강증진과 의료서비스향상을 위한 진단용방사선 안전관리에 대한 새로운 법적기준을 제시하여 방사선 피폭을 최소화하는 방사선안전관리 제도를 도입할 것을 제안한다.

다국어 초록 (Multilingual Abstract)

Korean general radiography imaging testing involves the use of an X-ray generator. Results are displayed on a computer monitor for assessment and provide information on anatomical structures. In this study, the performance of radiation protection facilities, such as shielding walls, shielding doors, and patient viewing windows, in general radiology examination rooms were evaluated using a glass dosimeter capable of measuring leakage. Radiation leakage measurements were performed 150 to 170 cm from the floor. From August 2023 to January 2024, month-long accumulated doses were measured using a glass dosimeter at 15 medical institutions. Results were then converted to three-month measurements and analyzed. Radiation leakage was detected at 5 of the 15 medical institutions. The maximum cumulative leakage dose outside the protective barrier on the patient entrance side of examination rooms was 2.10 mSv, and the maximum average dose was 0.24 mSv. In one of the medical institutions, cumulative leakage exceeded the Japanese legal limit of 1.3 mSv per quarter. The maximum cumulative leakage for patient viewing windows was 0.59 mSv with a maximum average 0.12 mSv. Based on these results, we propose that new standards be drafted to improve diagnostic radiation safety management, promote national health, and improve medical services.

참고문헌 (Reference)

• 1 김선칠, "Verification of the Protective Effect of Functional Shielding Cream for the Prevention of X-ray Low-dose Exposure" 17 (17): 497-506, 2023
• 2 이현정 ; 김창규 ; 한만석 ; 백철하, "Problems of the Radiation Safety Management System and Legal Improvement Plans in the Department of Radiological Science : Focusing on the survey of the head of the Department of Radiological Science" 16 (16): 815-823, 2022
• 3 이민관 ; 박찬록, "Performance Evaluation of U-net Deep Learning Model for Noise Reduction according to VariousHyper Parameters in Lung CT Images" 17 (17): 709-715, 2023
• 4 H. Ogul, "Novel 3D-Printed lead-free radiation protection apron in the medical X-ray and thermal neutron energy range" 219 : 2024
• 5 김지율 ; 예수영, "Non-alcoholic Fatty Liver Disease Classification using Gray Level Co-Ocurrence Matrix and ArtificialNeural Network on Non-alcoholic Fatty Liver Ultrasound Images" 17 (17): 735-742, 2023
• 6 J. Sempau, "Monte Carlo verification of the holder correction factors for the radiophotoluminescent glass dosimeter used by the IAEA in international dosimetry audits" 86 : 1-5, 2021
• 7 Chang Gyu Kim, "Evaluation of Environmental Radiation and Image Quality by Type of High-Energy Electromagnetic Wave Radiation Computed Tomography" 27 (27): 397-403, 2022
• 8 Abdullah Wesam ; Ramli Ramzun M. ; Khazaalah Thair Hussein ; Azman Nurul Zahirah Noor ; Nawafleh Tasnim M. ; Salem Farah, "Enhancing X-ray radiation protection with novel liquid silicone rubber composites: A promising alternative to lead aprons" 22 : 2024
• 9 김상현, "Dose Reduction Method for Chest CT using a Combination of Examination Condition Control and Iterative Reconstruction" 17 (17): 1025-1031, 2023
• 10 F. Sato, "Development of radiophotoluminescence glass dosimeter usable in high temperature environment" 53-54 : 8-11, 2013
• 11 Demirel İbrahim ; Yücel Haluk, "Development of a flexible composite based on vulcanized silicon casting with bismuth oxide and characterization of its radiation shielding effectiveness in diagnostic X-ray energy range and medium gamma-ray energies" 56 (56): 2570-2575, 2024
• 12 A. Iwawaki, "Comparison of air dose and operator exposure from portable X-ray units" 47 : 101787-, 2020
• 13 A, Weman, "Comparing the standard knee X-ray exposure factor, 10kV rule, and modified 10kV rule techniques in digital radiography to reduce patient radiation dose without loss of image quality" 30 (30): 574-581, 2024
• 14 J. E. Rah, "Clinical application of glass dosimeter for in vivo dose measurements of total body irradiation treatment technique" 46 (46): 40-45, 2011
• 15 Chang Gyu Kim, "Analysis of Use Factors in CT(Computed Tomgraphy)Safety Management of High-Energy Electromagnetic Radiation" 28 (28): 420-426, 2023
• 16 M. Iwao, "Ag-doped phosphate glass with high weathering resistance for RPL dosimeter" 140 : 2021
• 17 박가영 ; 김현철 ; 김병철, "A formalism for the absorbed dose evaluation of the glass dosimeter" 55 (55): 2283-2287, 2023