방사선산업학회지 (Journal of Radiation Industry)

한국방사선산업학회 (Korean Society of Radiation Industry)
권호 표지

Dual Energy CT에서 Monoenergetic 영상을 이용한 금속성 인공음영(Metal Artifact) 감소기법에 대한 연구

Dose Comparison according to the Tube Voltage, the Tube Current Change in CT Image

  • 문일봉 (광주보건대학교 방사선과) ;
  • 동경래 (광주보건대학교 방사선과) ;
  • 최성관 (광주보건대학교 방사선과) ;
  • 곽종길 (동신대학교 보건의료학과) ;
  • 김호성 (신한대학교 방사선학과) ;
  • 정운관 (조선대학교 원자력공학과)
  • Moon, Il-Bong (Department of Radiological Technology, Gwangju Health University) ;
  • Dong, Kyung-Rae (Department of Radiological Technology, Gwangju Health University) ;
  • Choi, Seong-Kwan (Department of Radiological Technology, Gwangju Health University) ;
  • Kwak, Jong-Gil (Department of Public Health and Medicine, Dongshin University Graduate School) ;
  • Kim, Ho-Sung (Department of Radiological Science, Shinhan University) ;
  • Chung, Woon-Kwan (Department of Nuclear Engineering, Chosun University)
  • 투고 : 2018.03.17
  • 심사 : 2018.06.15
  • 발행 : 2018.06.30

⟨ 이전 논문 다음 논문 ⟩

초록

It is to find optimize quantity of ray that can decrease metal artifact caused by artificial hip joint, etc. when deciphering an image by monochromatic X-ray. To compare change of CT number value and noise value of metal artifact in animal tested image, 4 areas were selected and changed keV to measure CT number and noise value at each keV then CNR (Contrast to Noise Ratio) value is calculated. From computer analysis result, 62keV is the point where can get the metal artifact minimized image, but this paper figured out that it is possible to get the metal artifact minimized image from 90 keV. Therefore, it is possible to get diagnosable image that minimized metal artifact by reconstruction in condition of 90 keV when having CT scan for patients who had artificial metal substance enthesis such as pedicle screw enthesis and artificial coxaenthesis.

키워드

과제정보

연구 과제 주관 기관 : Chosun University

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