Korean Journal of Digital Imaging in Medicine (대한디지털의료영상학회논문지)
- Volume 13 Issue 3
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- Pages.139-144
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- 2011
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- 1976-7641(pISSN)
A Study on the Proper Chest Exposure Conditions of Mobile Digital X-ray Unit by Exposure Index
Exposure Index를 이용한 이동형 디지털 X선 장치의 흉부촬영 적정노출조건에 관한 연구
- Kim, Jae-In (Department of Radiology, Asan Medical Center) ;
- Lee, Yang-Sub (Department of Radiology, Asan Medical Center) ;
- Jang, Dong-Soo (Department of Radiology, Asan Medical Center) ;
- Jung, Min-Cheol (Department of Radiology, Asan Medical Center) ;
- Bae, Seung-Ho (Department of Radiology, Asan Medical Center) ;
- Lee, Kwan-Sub (Department of Radiology, Asan Medical Center) ;
- Ha, Dong-Yoon (Department of Radiology, Asan Medical Center)
- 김재인 (서울아산병원 영상의학과) ;
- 이양섭 (서울아산병원 영상의학과) ;
- 장동수 (서울아산병원 영상의학과) ;
- 정민철 (서울아산병원 영상의학과) ;
- 배승호 (서울아산병원 영상의학과) ;
- 이관섭 (서울아산병원 영상의학과) ;
- 하동윤 (서울아산병원 영상의학과)
- Received : 2011.07.14
- Accepted : 2011.09.06
- Published : 2011.09.30
Abstract
The purpose of this report is recommending a standard indicator which reflects the radiation exposure that is incident on a detector after every exposure event and that reflects the noise levels present in the image data. The experiment was performed with mobile digital X-ray unit and used a acrylic phantom for exposure index measurement. Exposure modality was kVp, mAs, SID. After every exposure, make a data sheet for characteristic curve of detector response. The equipment performed Mobile digital X-ray unit provide the user with values ralated to the incident exposure(air kerma)to the digital detector. They are showed as a logarithmic function shaped. As a result, DEI means a relative measure of exposure to the detector, as compared to the expected exposure for a particular anatomical view. Radiographic technique is the combination of factors used to exposure an anatomical part to produce a high quality radiography and technique charts used most commonly by radiographers to produce consistently exposure level which patient dose can be kept acceptably low.