Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Image-guided Surgery System Using the Stereo Matching Method

스테레오 매칭 기법을 이용한 영상유도시술 시스템

  • 강현수 (경희대학교 동서의학대학원 의료공학전공, 삼성서울병원 영상의학센터) ;
  • 이호진 ((주)엔지티) ;
  • 문찬홍 (피츠버그대학교 신경생물학과 맥관센터) ;
  • 문원진 ((주) AIL뮤) ;
  • 김형진 ((주) AIL뮤) ;
  • 최근호 ((주) AIL뮤) ;
  • 함영국 ((주) 엔지티) ;
  • 이수열 (경희대학교 동서의학대학원 의료공학전공) ;
  • 변홍식 (경희대학교 동서의학대학원, 성균관대학교 의과대학)
  • Published : 2003.08.01
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Abstract

MRI provides anatomical structure information with superb spatial resolution that can be utilized in clinical surgeries. Advanced image processing techniques in conjunction with the MRI-guided surgery is expected to be of great importance in brain surgeries in the near future. In this paper, we introduce an image-guided surgery technique using the stereo matching method. To perform image-guided biopsy operations, we made MRI markers, camera markers and a detection probe marker. To evaluate the accuracy of the image-guided system. we made a silicone phantom. Using the phantom and markers, we have performed MRI-guided experiments with a 1.5 Tesla MRI system. It has been verified from phantom experiments that our system has a positioning error less than 1.5%. Compared with other image guided surgery system, our system shows better positioning accuracy.

자기공명영상은 뛰어난 해상도의 해부학적 구조 정보를 제공하여 임상적인 외과수술에 매우 유용하게 적용되고 있다. 영상처리 기법과 MRI 영상유도기법을 이용한 뇌수술은 외과 전문의에게 많은 도움을 줄 수 있다. 본 논문에서는 스테레오 매칭 기법을 이용하여 중재적 시술이 가능한 유도영상시술 시스템의 개발에 관하여 소개하였다. 생검을 수행하기 위하여, MRI 마커, 카메라 마커, 탐침 프로브 마커를 정밀하게 제작하였고 시스템의 정확성을 입증하기 위하여 팬텀을 제작하였다. 제작된 마커와 팬텀을 이용하여 1.5 Tesla MRI 시스템으로 실험을 수행하였다. 구현된 시스템의 오차범위는 팬텀 실험에서 약 1.5%였고, 동물실험에서는 오차가 3mm 이내로 임상적용이 가능한 수준임을 착인하였다. 본 연구에서 제시한 스테레오 매칭기법을 이용한 유도영상시술 시스템은 기존의 방법보다 우수한 성능을 보여주었다.

Keywords

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