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NTIS 바로가기비파괴검사학회지 = Journal of the Korean Society for Nondestructive Testing, v.32 no.5, 2012년, pp.551 - 563
배무호 (한림대학교 전자공학과)
Medical ultrasound systems have been used since 1950s, and are now widely used in most hospitals as indispensable diagnostic imaging systems. Since array probe was introduced in 1970s, beamforming technology using electronic signal processing has been adopted to the medical ultrasound system, and ha...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
빔포밍 기술이란 무엇인가? | 1970년대 초음파진단기에 어레이 프로브가 사용되기 시작한 이래로 전자적 신호처리를 통한 빔포밍 기술이 초음파진단기에 적용되었고, 꾸준히 개선되어 왔다. 빔포밍 기술은 초음파진단기의 해상도를 결정짓는 중요한 신호처리 기술이다. 이 논문에서는 이 빔포밍 기술의 원리부터 최근 동향까지 간략히 소개하고자 한다. | |
초음파진단기는 언제부터 사용되었는가? | 초음파진단기는 1950년대부터 사용되기 시작했고 그 동안 꾸준한 기술 발전을 통해 현재 대부분의 병원에서 필수불가결한 영상진단장비로 널리 활용되고 있다. 1970년대 초음파진단기에 어레이 프로브가 사용되기 시작한 이래로 전자적 신호처리를 통한 빔포밍 기술이 초음파진단기에 적용되었고, 꾸준히 개선되어 왔다. | |
초음파진단기가 영상을 나타내는 양식으로는 무엇이 있는가? | 초음파진 단기는 기본적으로 인체내의 한 단면을 실시간으로 영상화하고 있다. 영상을 나타내는 양식(modality)로는, echo의 진폭을 영상의 밝기(brightness)로 나타내는 B-모드(mode), 인체내의 혈류를 표시하는 도플러 모드(Doppler mode) 등의 모드가 있다. 최근에는 단면만이 아니라 입체를 실시간으로 보여 주는 실시간 3차원(또는 4차원이라고 함) 영상 모드도 실용화되었다. |
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