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2014 Vol.33, Issue 3 Preview Page
Analysis of Ultrasound Synthetic Transmit Focusing Using Plane Waves

평면파를 이용한 초음파 합성 송신 집속 기법의 해석

Jong Pil Lee1
,
Jae Hee Song2
,
Tai-Kyong Song1*
이 종필1
,
송 재희2
,
송 태경1*
1Department of Electronic Engineering, Sogang University
1서강대학교 전자공학과
2서강대학교 서강미래기술연구원 의료기술연구소
*교신저자. *Corresponding Author. 
31 May 2014. pp. 200-209
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Abstract

In this paper, we present a general model for synthetic transmit focusing method using plane waves (STF-PW) of which the properties are investigated through mathematical analysis and compared with those of the conventional focusing method. The analysis results show that STF-PW produces non-diffracting beams in the sense that their main lobe widths do not change with depth. We also present a method for synthesis of plane waves to obtain a desired main lobe width while preventing grating lobe generation and a method for broadening the region over which the non-diffracting property is maintained. The proposed model and analysis results were validated through computer simulations.

Keywords
Ultrasound imaging
Plane wave
Synthetic focusing
Non-diffraction

본 논문에서는 평면파 합성 송신집속 방법의 모델을 제시하고 수학적 해석을 통해 그 특성을 분석하였으며 일반적인 구형파 기반의 집속 방법과 비교하였다. 이를 통하여 평면파를 이용한 합성 송신집속 방법은 거리에 따라 주엽의 폭이 변하지 않는 비회절 빔을 발생함을 확인하였다. 또한 그레이팅 로브의 발생을 억제하며 원하는 주엽 폭을 얻기 위한 평면파 합성 방법, 그리고 비회절 특성이 유지되는 영역을 효과적으로 확장시킬 수 있는 방법을 제시하였다. 제안된 방법과 해석결과들을 컴퓨터 모의실험을 통해 검증하였다.

키워드
초음파 영상
평면파
합성 집속
비회절
빔패턴
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https://cdn.apub.kr/journalsite/sites/ask/2014-033-03/N0660330306/images/PIC7629.jpg
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Information
  • Publisher :The Acoustical Society of Korea
  • Publisher(Ko) :한국음향학회
  • Journal Title :The Journal of the Acoustical Society of Korea
  • Journal Title(Ko) :한국음향학회지
  • Volume : 33
  • No :3
  • Pages :200-209
  • Received Date : 2014-02-10
  • Accepted Date : 2014-04-15
  • DOI :https://doi.org/10.7776/ASK.2014.33.3.200
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