Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Analysis on Code Used in Pulse Compression Method for Improving Resolution of Ultrasound Imaging System

초음파 영상 시스템에서의 해상도 개선을 위한 펄스압축기법에 사용되는 코드에 대한 분석

  • You, Y.M. (Department of Electronic Engineering, Sogang University) ;
  • Lee, H.H. (Department of Electronic Engineering, Sogang University) ;
  • Song, T.K. (Department of Electronic Engineering, Sogang University)
  • 유양모 (서강대학교 공과대학 전자공학과) ;
  • 이한희 (서강대학교 공과대학 전자공학과) ;
  • 송태경 (서강대학교 공과대학 전자공학과)
  • Published : 1998.11.20
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Abstract

Pulse echo techniques have been used for the conventional medical ultrasound imaging systems. However, their resolution is limited in the transmitted signal power. To overcome this limit, pulse compression method used in the radar systems was proposed. This system transmits a continuous coded signal and then compresses the received signal into the short and high resolution pulse by using correlator. The reflectors can be detected by cross-correlation between the transmitted signal and the received signal with the depth information. In this paper, we will present a comparative study of the performances of the most common sequences(pseudo-chirp, m-sequences, modified Golay code). The best result for improving resolution is obtained with the modified Golay Code.

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