http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Multi-detector Computed Tomography를 이용한 Neck 검사에서 Automatic Exposure Control을 이용한 선량의 최적화
이일수(Il Soo Lee),김문찬(Moon Chan Kim),이민영(Min Yung Lee),남윤철(Yoon Cheol Nam),한동균(Dong Kyoon Han) 대한CT영상기술학회 2010 대한CT영상기술학회지 Vol.12 No.1
Purpose The purpose of die study was to compare diagnostic acceptability, noise and radiation exposure of neck multi-detector computed tomography(MDCT) performed with automatic exposure control(AEC) and fixed mA method. Materials and methods A 50 patient group were divided into 5 groups: used fixed mA, AEC with noise index 7.02, 9.10, 12.22 and 12.60 respectively and evaluated image quality. The CT equipment used GE 64 VCT scanners and neck organ doses were measured using Rando phantom and an optical glass dosimeter and evaluated patient’s image noise and exposure dose. Results There was no significant difference between using AEC technique and fixed mA in diagnostic acceptability and subjective noise. AEC technique resulted in radiation dose reduction of 9.5~35.4% compared with fixed mA technique at noise index 7.02~12.22 in thyroid level. Conslusion AEC method provided acceptable image noise for neck CT and judicious monitoring of radiation dose to patients has to be balanced with diagnostic image quality.