Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Ultrasound Imaging Based On Simultaneous Multiple Transmit Focusing Using Orthogonal Modified Golay Code

직교하는 변형된 골레이(Golay) 코드를 이용한 동시 다중 집속 기반의 초음파 영상 기법

  • Kim, B.H. (Department of Electronic Engineering, Sogang University) ;
  • Jeong, Y.K. (Department of Electronic Engineering, Sogang University) ;
  • Song, T.K. (Department of Electronic Engineering, Sogang University)
  • 김배형 (서강대학교 공과대학 전자공학과) ;
  • 정영관 (서강대학교 공과대학 전자공학과) ;
  • 송태경 (서강대학교 공과대학 전자공학과)
  • Published : 2001.11.24
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Abstract

A new ultrasound imaging technique based on simultaneous multiple transmit focusing using orthogonal modified Golay codes is presented. modified Golay codes are used to increase signal-to-noise-ratio(SNR) and maximize the transmit power efficiency(TPE). Conventional Golay codes consist of a pair of complementary codes with same length and can be compressed into a delta-like signal due to their complementary property. In the present work, two modified Golay codes focused at different depths are transmitted at the same time, which are mutually orthogonal. On receive, these orthogonal modified Golay codes are separately compressed into two short pulses and individually focused. These two focused beam are combined to form a frame of image with improved lateral resolution. Computer simulations are performed to verity the proposed method improves the lateral resolution of image compared with the conventional echo system.

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