IEC 규정 노출지수를 활용한 디지털 방사선 영상시스템에서의 영상 수용체간 특성평가 (Ⅰ)

• Published in: 방사선기술과학 Vol. 42; no. 4; pp. 291 - 299
• Main Authors: 박혜민(Park Hyemin), 윤용수(Yoon Yongsu), 노영훈(Roh Younghoon), 김성준(Kim Sungjun), 나찬영(Na Chanyoung), 한태호(Han Taeho), 김정수(Kim Jungsu), 정회원(Jeong hoiwoun), 김정민(Kim Jungmin)
• Format: Journal Article
• Language: Korean
• Published: 대한방사선과학회(구 대한방사선기술학회) 30.08.2019; KOREAN SOCIETY OF RADIOLOGICAL TECHNOLOGY; 대한방사선과학회
• Subjects: 방사선과학; Computed Radiography System; 특성곡선; 영상 수용체; 노출지수; 디지털 방사선 영상시스템; Characteristics Curve; 컴퓨터 방사선 영상시스템; Image Receptor; Exposure Index; Digital Radiography System
• ISSN: 2288-3509; 2384-1168

The International Electrotechnical Commission (IEC) has regulated the definition and requirements of the exposure index (EI). In this study, we calculated the EI of several image receptors in digital radiography system of two different manufacturers according to the method as per IEC, and evaluated the relationship with incident air kerma. To calculate the EI, w e obtained the characteristics curve of each image receptor by increasing the incident air kerma at RQA 3, 5, 7 and 9, respectively. As a result, there was no significant difference in the EI values between different image receptors of the same manufacturer, but EI values of different manufacturer was different despite the same air kerma was incident. Therefore, understanding the characteristics of the digital radiography systems is important in order to use EI as a tool for measuring and managing the radiation dose.