Medical Ultrasound Imaging Using Pulse Compression and Depth-Dependent Mismatched-Filtering

  • A. R. Brenner
  • K. Eck
  • W. Wilhelm
  • T. G. Noll
Part of the Acoustical Imaging book series (ACIM, volume 23)

Abstract

In conventional medical ultrasonic imaging, the signal-to-noise ratio (SNR) as well as the penetration depth are insufficient for many diagnostic cases. In pulse-echo ultrasonic imaging tissue heating is negligibly small, whereas there is a potential for acoustic cavitation at peak intensities currently used in ultrasonic imaging1. Therefore improving the SNR by increasing the peak intensity of the acoustic signal is not possible. This restriction can be cir- cumvented by using elongated, coded signals with high average energy at moderate peak intensity 2,3. Frequency-modulated chirps are suitable signals for this purpose.

Keywords

Attenuation Cavitation Deconvolution Acoustics Lewin 

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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • A. R. Brenner
    • 1
  • K. Eck
    • 1
  • W. Wilhelm
    • 1
  • T. G. Noll
    • 1
  1. 1.Chair of Electrical Engineering and Computer Systems RWTH Aachen, University of TechnologyAachenGermany

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