Advertisement

Ultrafast Acoustical Imaging with Surface Acoustic Wave Components

  • Pierre Cauvard
  • Pierre Hartemann
Part of the Acoustical Imaging book series (ACIM, volume 10)

Abstract

A new technique for processing the electric signals resulting from an ultrasound multielement probe has been used to achieve a high rate B-mode imaging system. The images are formed with surface-acoustic-waves (SAW) propagating on a PZT substrate and read out with SAW transducer arrays. The imaging system operation is explained and the configuration of specific SAW components is described. For showing the feasibility of this processing method, experimental results about a 20 parallel channel system are reported. A rate of 800 frames/sec. has been reached for an image made of 1500 uncorrelated points. However more detailed images have been obtained with a frame rate of 400/sec. and a point number of 3000 In this case the resolution is 1 mm in depth and 2.5mm in width.

Keywords

Frame Rate Transducer Array Probe Array Matrix Column Angular Aperture 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • Pierre Cauvard
    • 1
  • Pierre Hartemann
    • 1
  1. 1.Laboratoire Central de RecherchesTHOMSON-CSFOrsayFrance

Personalised recommendations