Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Method Generating Circular Wave for Synthetic Focusing

초음파 영상 시스템의 Synthetic Focusing을 위한 구면파 발생 방법

  • Oh, J.S. (Department of Electronic Engineering, Konkuk University) ;
  • Kim, J.J. (Department of Electronic Engineering, Sogang University) ;
  • Song, T.K. (Department of Electronic Engineering, Sogang University) ;
  • Ahn, Y.B. (Department of Electronic Engineering, Konkuk University)
  • Published : 1998.11.20
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Abstract

The ultrasonic imaging systems using synthetic aperture beamforming has been formed in the way that one element transmits and then receives a pulse. Because the amplitude of a pulse from one element is too small to propagate a long distance, the SNR(Signal to Noise Ratio)is low. This paper proposes the method to make a circular wave almost equal to one generated by one element using several elements. The amplitude of the wave made up of several elements is much larger than that of one element. And we can improve the SNR.

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