Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Developement of Efficient Algorithm to Eliminate Aliasing of Ultrasonic Pulsed Wave Doppler Signal

초음파 Pulsed Wave 도플러 신호의 Aliasing 제거를 위한 효율적인 알고리즘 개발

  • Kim, G.D. (Dept. of Electronic Engineering, Sogang University) ;
  • Hwang, J.S. (Dept. of Electronic Engineering, Sogang University) ;
  • Ahn, Y.B. (Dept. of Electronic Engineering, Kon-Kuk University) ;
  • Song, T.K. (Dept. of Electronic Engineering, Sogang University)
  • Published : 1998.11.20
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Abstract

The important role of the ultrasonic Doppler system in the modem clinical medicine is to provide the clinical information of the vascular system. The ultrasonic pulsed wave(PW) Doppler system, a kind of the ultrasound Doppler system, is more available than the ultrasonic continuous wave(CW) Doppler system because it can evaluate the velocity and the direction of blood flow as well as the depth of vessel. However, the ultrasonic PW Doppler system has the disadvantage that the range of evaluating velocity of blood flow is limited(Nyquist limit). In order to solve this limit, we propose the algorithm for eliminating this aliasing in this paper. In addition, we propose the efficient signal processing algorithm.

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