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Related Experiment Videos

Filter-based coded-excitation system for high-speed ultrasonic imaging.

J Shen1, E S Ebbini

  • 1Lucent Technologies, Inc., Whippany, NJ 07981, USA.

IEEE Transactions on Medical Imaging
|February 27, 1999
PubMed
Summary
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A new algorithm enables high-speed, real-time 3-D ultrasound imaging by processing pulse-echo data. This method uses coded excitation and a linear model for faster, more accurate image reconstruction of phantoms.

Area of Science:

  • Medical Imaging
  • Ultrasound Technology
  • Signal Processing

Background:

  • Real-time 3-D ultrasound imaging is crucial for medical diagnostics.
  • Existing methods for processing ultrasound pulse-echo data can be computationally intensive.
  • High-speed parallel processing is needed for advanced ultrasound applications.

Purpose of the Study:

  • To present a novel algorithm for high-speed parallel processing of ultrasound pulse-echo data.
  • To enable real-time three-dimensional (3-D) imaging using a new approach.
  • To demonstrate the validity of the algorithm for phased-array pulse-echo imaging.

Main Methods:

  • Utilized a discretized linear model of echo data from the region of interest (ROI).
  • Employed binary codes for transmitter array elements to generate distinct impulse responses.

Related Experiment Videos

  • Implemented image reconstruction using a regularized pseudoinverse operator and a transversal filter bank.
  • Introduced an augmented model for imperfect echo blocking and a column-weighting algorithm.

    • Main Results:

    • Successfully reconstructed images of a cyst phantom using the proposed formulation.
    • Demonstrated the algorithm's effectiveness in phased-array pulse-echo imaging of speckle-generating phantoms.
    • Presented a detailed illustration of full image reconstruction using subimage acquisition and compounding.

    Conclusions:

    • The novel algorithm provides a valid approach for real-time 3-D ultrasound imaging.
    • Coded-excitation-based image reconstruction from speckle-generating phantoms has been demonstrated.
    • The method offers potential for improved performance in medical imaging systems.