Dual-energy 컴퓨터단층촬영에서 장비 제공선량과 측정선량 비교

• 영문명: Comparison of Estimated and Measured Doses of Dual-energy Computed Tomography
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 김영균(Kim Yung-Kyoon) 김연민(Kim Yon-Min)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제41권 제5호, 405~411쪽, 전체 7쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2018.10.30

영문 초록

We will provide basic data on the evaluation of patient dose in terms of DECT quality control by comparing the equipment-provided dose with the measured dose according to the configuration method of the X-ray generator by the manufacturer of the dual-energy CT unit. For computed tomography (CT) equipment, Discovery 750HD, Aquilion ONE GENESIS Edition, and Somatom Definition Flash were used. The CTDI vol value was measured by inserting the Unfors Xi ion chamber into a 32 cm PMMA acryl Phantom. The results of estimated CTDI vol DECT and measured CTDI vol showed that the dose difference between DECT 80 + 140kVp of G company was at least 0.51% and -1.90% max, and measured CTDI vol was slightly lower (p<0.05). The difference of 80 + 140 kVp of S company was the minimum of 5.84% and the maximum of 7.52% (p<0.05). The measured CTDI vol was less than estimated CTDI vol . The C company’s 80 + 135 kVp showed a difference of at least 7.58% and a maximum of 13.58% (P<0.05), and all of measured CTDI vol was less. The linearity of exposure dose for all DECT equipment was very linearly reflected with R 2 being 0.97 or above, and the measured dose of the ionization chamber was less than the predicted dose of the monitor.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

키워드

Dual energy CT CTDIvol Estimated Radiation dose Measurement Radiation dose Quality assueance 이중에너지 CT CTDIvol 예측선량 측정선량 정도관리