비파괴검사학회지 (Journal of the Korean Society for Nondestructive Testing)

  • 제32권5호
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  • Pages.564-572
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  • 2012
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  • 1225-7842(pISSN)
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  • 2287-402X(eISSN)
한국비파괴검사학회 (The Korean Society for Nondestructive Testing)
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하모닉 영상의 물리학

Physics of Harmonic Imaging

  • 최민주 (제주대학교 의학전문대학원 의학과 의공학교실) ;
  • 양정화 (제주대학교 의공학협동과정) ;
  • 팽동국 (제주대학교 의공학협동과정)
  • 투고 : 2012.08.31
  • 심사 : 2012.10.05
  • 발행 : 2012.10.30
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논저에서는 하모닉 영상을 소개하고, 그 원리를 및 물리적 특성을 기존 초음파 영상과 대비하여 기술한다. 인체 조직의 경계에서 반사하는 초음파 에코를 이용한 기존의 초음파 영상의 원리를 제시하고 하모닉 성분을 생성하는 비선형 초음파 전파 과정을 개념적으로 기술한다. 초음파 에코 신호로부터 하모닉 성분을 효율적으로 추출하는 pulse inversion technique를 소개하고 구현된 하모닉 영상이 종래의 초음파 영상과 비교하여 장점을 요약한다. 하모닉의 생성 기전에 따라 하모닉 영상을 분류하고 하모닉 영상을 기존의 초음파 영상과 비교한다. 하모닉 영상의 임상적 중요성, 향후 전망 및 새로운 연구 분야를 언급한다.

Harmonic imaging is introduced in the present article and its principle and physical characteristics is described in contrast to conventional ultrasonic imaging. The principle of the conventional image which uses ultrasonic echoes reflected at the interfaces between tissues is presented, and the nonlinear ultrasonic propagation which results in harmonic components is conceptually described. The pulse inversion technique which effectively extracts the harmonic components from the ultrasonic echo signals is introduced, and the advantages of the constructed harmonic images are summarized comparing with those of conventional ultrasonic images. The harmonic images are classified according to the mechanism of harmonic production, and the typical harmonic images obtained from patients are presented in contrast to the corresponding sonograms. Clinical significance and prospects of harmonic imaging and the future research areas are discussed.

키워드

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피인용 문헌

  1. Construction of Static 3D Ultrasonography Image by Radiation Beam Tracking Method from 1D Array Probe vol.35, pp.2, 2015, https://doi.org/10.7779/JKSNT.2015.35.2.128