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자료유형
학술저널
저자정보
박일 (경희대학교) 김경호 (경희대학교 한국원자력안전기술원) 오승철 (경희대학교 한국원자력안전기술원) 송지영 (경희대학교) 권오현 (경희대학교) 김광표 (경희대학교)
저널정보
한국방사선산업학회 방사선산업학회지 방사선산업학회지 제10권 제3호
발행연도
2016.1
수록면
139 - 144 (6page)

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The use of dental radiographic examinations is common although radiation dose resulting from the dental radiography is relatively small. Therefore, it is required to evaluate radiation dose from the dental radiography for radiation safety purpose. The objectives of the present study were to develop dosimetry method for intraoral dental radiography using a Monte Carlo method based radiation transport code and to calculate organ doses and effective doses of patients from different types of intraoral radiographies. Radiological properties of dental radiography equipment were characterized for the evaluation of patient radiation dose. The properties including x-ray energy spectrum were simulated using MCNP code. Organ doses and effective doses to patients were calculated by MCNP simulation with computational adult phantoms. At the typical equipment settings (60 kVp, 7 mA, and 0.12 sec), the entrance air kerma was 1.79 mGy and the measured half value layer was 1.82 mm. The half value layer calculated by MCNP simulation was well agreed with the measurement values. Effective doses from intraoral radiographies ranged from 1 μSv for maxilla premolar to 3 μSv for maxilla incisor. Oral cavity layer (23~82 μSv) and salivary glands (10~68 μSv) received relatively high radiation dose. Thyroid also received high radiation dose (3~47 μSv) for examinations. The developed dosimetry method and evaluated radiation doses in this study can be utilized for policy making, patient dose management, and development of low-dose equipment. In addition, this study can ultimately contribute to decrease radiation dose to patients for radiation safety.

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