Multi-detector Computed Tomography를 이용한 Neck 검사에서 Automatic Exposure Control을 이용한 선량의 최적화

• 영문명: Usefulness of Automatic Exposure Control for Dose Reduction: In Neck Study Using Multi-detector Computed Tomography
• 발행기관: 대한CT영상기술학회
• 저자명: 이일수(Il Soo Lee) 김문찬(Moon Chan Kim) 이민영(Min Yung Lee) 남윤철(Yoon Cheol Nam) 한동균(Dong Kyoon Han)
• 간행물 정보: 『대한CT영상기술학회지』대한전산화단층기술학회지 제12권 제1호, 7~12쪽, 전체 6쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2010.04.30

영문 초록

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.

목차

Abstract

Ⅰ. 서론

Ⅱ. 대상 및 방법

Ⅲ. 결과

Ⅳ. 고찰

Ⅴ. 결론

참고문헌

키워드

AEC fixed mA noise index diagnostic acceptability dose reduction