CT는 종래의 엑스선 촬영 기법으로 얻은 인체 내부의 투영 데이터를 컴퓨터로 재구성하여 단층영상을 만들어 내는 기술이다. 1972년 최초의 상용화 CT가 개발된 이후로 촬영 속도 개선의 측면에서 비약적인 발전을 이루었다. 겐트리 구동 방식의 발전과 Spiral CT, MDCT 기술의 도입이 스캔 시간 단축에 큰 역할을 하였다. 특히 MDCT의 개발로 다양한 임상적 활용이 가능해졌다. 한편 O-arm CT 기술은 CT를 공간적 제약에서 벗어나게 하였다. 이는 CT가 수술실 현장에서 활용될 수 있다는 임상적 의미를 가진다. O-arm CT는 즉석에서 활용되어야 하므로 촬영과 동시에 영상이 실시간으로 재구성되는 것도 중요하다. 최근에 도입되기 시작한 GPU 프로그래밍 기술은 고성능 GPU 하드웨어의 발전을 등에 업고 실시간 CT 재구성을 가능하게 할 것으로 보인다.
KSP Keywords
Spiral CT
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