인터벤션에서 자동노출제어장치와 수동노출 사용 시 두께 변화에 따른 선량감소 방안 연구

• 영문명: A Study on Dose Reduction Method according to Slice Thickness Change using Automatic Exposure Controller and Manual Exposure in Intervention
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 황준호(Jun-Ho Hwang) 정구민(Ku-Min Jung) 최지안(Ji-An Choi) 김현수(Hyun-Soo Kim) 이경배(Kyung-Bae Lee)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제41권 제2호, 115~122쪽, 전체 8쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2018.04.30

국문 초록

We aims to perform comparative analysis on the dose area and image qualities varying on the slice thickness when using Automatic Exposure Controller (AEC) and manual exposure; thus, it wants to suggest a measure to reduce exposure dose by setting the optimal examination condition for each slice thickness. The method was to set the thickness as Thin, Normal, and Heavy adult and evaluate the dose area, spatial resolution, low contrast resolution, Signal to Noise Ratio (SNR) and Contrast to Noise Ratio (CNR) according to each slice thickness by using the AEC and the manual ex-posure controller. The dose area according to each slice thickness all increased both when using the AEC and the man-ual exposure. However, the manual exposure showed lower dose area product than the AEC. Spatial resolutions and low contrast resolutions were all observed to be higher than the evaluation standard. Also, the SNR and CNR of each thick-ness all increased when using the AEC. When using the manual exposure, SNR and CNR increased in all cases other than the Heavy Adult. Consequently, the Thin and Normal Adult showed dose reduction about 2 times when using the manual exposure controller, while ensuring the image quality. Heavy adult was able to maintain good image quality by using AEC.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

키워드

NEMA Phantom Automatic Exposure Controller(AEC) Manual Exposure Dose Area Image Quality NEMA Phantom 자동노출제어장치 수동노출 면적선량 영상화질