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NTIS 바로가기대한치과보철학회지 = The journal of Korean academy of prosthodontics, v.55 no.1, 2017년, pp.100 - 110
표세욱 (서울대학교 치의학대학원 치과보철학교실) , 임영준 (서울대학교 치의학대학원 치과보철학교실) , 이원진 (서울대학교 치과대학 구강악안면방사선학교실) , 이준재 (서울대학교 치의학대학원 치과보철학교실)
Purpose: This paper describes the basic principles and the feasibility of the field of dental diagnosis of optical coherence tomography (OCT) used in diverse field of medical diagnosis. Materials and methods: In this review, the research data of OCT were searched from PubMed, medical journal and rel...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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증상이 없는 구강내 초기 질환은 조기에 발견이 어렵고, 어느 정도 진행된 질환만이 나타나게되는 이유는? | 현재 활용되고 있는 영상 치의학적 접근법으로는 파노라마 방사선 촬영 및 치근단 방사선 촬영, 3차원적인 정보를 제공하는 전산화 단층촬영(CT; computerized tomography), 그리고 경조직을 포함한 연조직의 상태까지 알려주는 자기공명영상(MRI; magnetic resonance imaging) 검사법 등이 있다. 하지만 현재 영상학적 검사법으로는 마이크론 단위의 미세한 부위를 검사하기에 많은 한계가 있다. 따라서 증상이 없는 구강내 초기 질환은 조기에 발견이 어렵고, 어느 정도 진행된 질환만이 나타나게 된다. | |
마이켈슨 간섭계의 원리는? | 마이켈슨 간섭계의 원리는 Fig. 1에서 보이는 것처럼 광원에서 나온 빛이 반은도금 거울에서 반사광과 투과광으로 분할되며 두 개의 빛이 각각의 거울에 반사하여 다시 한 곳으로 모이는데, 이때두거울의광경로(거리)의 차이에 따라 간섭무늬가 다르게 나타나는 것을 푸리에(Fourier) 변환과 같은 수치해석학적인 방법을 이용하여 영상으로 구현하는 것이다. Fig. | |
OCT의 장점과 특징은? | 이러한 두 가지 장치의 원리를 적용시킨OCT의 장점은 비교적 넓은 영역(30 mm2)을 측정할 수 있고 10 ㎛ 이하의 분해능을 가지고 있으며, 실시간 확인이 가능할 정도로 빠른 데이터 수집과 그로 인한 고해상도의 영상변환이 그 특징이라고 할 수 있다. 또한, 일반적으로는 광섬유를 기반으로 장치를 제작하므로 기기의 크기를 소형화하여 다양한 부위에 적용할 수 있는 가능성을 보여준다. |
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