형광 X선 CT에서 촬상 시간의 단축화 알고리즘

Algorithm to Shorten Imaging Time in Fluorescent X-ray Computed Tomogrpahy

  • 정남채 (초당대학교 정보통신공학과)
  • 발행 : 2001.10.01

초록

방사광을 이용한 형강 X선 CT 이미징의 고속화를 위한 촬상 시스템과 처리 알고리즘을 검토하였다. 본 논문에서 사용된 촬상시스템은 고계수율 영역에서 안정된 동작을 한 전자 시스템으로 불감시간이 약 6%로 감소되고 계측시간의 경우도 1 점 당 3초로 단축되었다. 또한 재구성 알고리즘의 효율화를 증명하였고, 메모리와 계산량을 약 1/100로 감소시켰다. 물리적 phantom으로 그 정량성을 확인하였고, 시험관내의 갑상선의 화상으로부터 요드 분포를 추정하였다. 이러한 결과는 생체내에서 형광 X선 CT 계측의 실현 가능성을 보여준 것이다.

In this paper it was examined both imaging system and processing algorithm for imaging's high speedization of fluorescent X-ray computed tomography using synchrotron radiation, The electronic system was used for dead time by about 6% but shortening of measure time was achieved by 2 seconds per 1 point. Also efficiency of reconstruction algorithm was proved, and memory and calculation amount was decreased by about 1/100 The fixed quantity was confirmed by physical phantom, and iodine distribution was presumed from image of thyroid gland in vitro These result shows realization possibility of fluorescent X-ray computed tomography measure in vivo.

키워드

참고문헌

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