Progress in Medical Physics (한국의학물리학회지:의학물리)
- Volume 18 Issue 3
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- Pages.139-143
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- 2007
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- 2508-4445(pISSN)
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- 2508-4453(eISSN)
Dose Measurements using Phantoms for Tube Voltage, Tube Current, Slice Thickness in MDCT
MDCT의 관전압, 관전류, 슬라이스 두께 변화에 따른 팬텀의 선량 분포 측정
- Lee, Chang-Lae (Department of Radiological Science, College of Health Science and Research Institute of Health Science, Yonsei University) ;
- Jeon, Seong-Su (Department of Radiology, Wonju Christian Hospital, Yonsei University) ;
- Nam, So-Ra (Department of Radiological Science, College of Health Science and Research Institute of Health Science, Yonsei University) ;
- Cho, Hyo-Min (Department of Radiological Science, College of Health Science and Research Institute of Health Science, Yonsei University) ;
- Jung, Ji-Young (Department of Radiological Science, College of Health Science and Research Institute of Health Science, Yonsei University) ;
- Kim, Hee-Joung (Department of Radiological Science, College of Health Science and Research Institute of Health Science, Yonsei University)
- 이창래 (연세대학교 방사선학과, 보건과학연구소) ;
- 전성수 (연세대학교 원주기독병원 영상의학과) ;
- 남소라 (연세대학교 방사선학과, 보건과학연구소) ;
- 조효민 (연세대학교 방사선학과 보건과학연구소) ;
- 정지영 (연세대학교 방사선학과, 보건과학연구소) ;
- 김희중 (연세대학교 방사선학과, 보건과학연구소)
- Published : 2007.09.30
Abstract
The purpose of this study was to measure and evaluate radiation dose for MDCT parameters. Patient dose for various combination of MDCT parameters were experimentally measured, using MDCT (GE light speed plus 4 slice, USA), model 2026C electrometer (RADICAL 2026C, USA), standard Polymethylmethacrylate (PMMA) head and body CT dosimetry phantoms. In clinical situations, for a typical abdominal scan performed with MDCT at 120 kVp, 180 mAs, 20 mm collimation, and a pitch of 0.75
본 연구는 MDCT (multi-detector computed tomography) 파라미터 변화에 따른 환자선량을 측정하고 평가 하고자 하였다. MDCT 파라미터의 다양한 변화에 의한 환자선량은 MDCT (GE light speed plus 4 slice, USA)와 model 2026C electrometer (RADICAL 2026C, USA), 그리고 head와 body의 CT선량 표준팬텀(standard polymethylmethacrylate)을 사용하여 측정 하였다. 그 결과 환자선량