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Related Experiment Videos

A new digital phased array system for dynamic focusing and steering with reduced sampling rate.

T K Song1, S B Park

  • 1Department of Electrical Engineering Korea Advanced Institute of Science & Technology, Seoul.

Ultrasonic Imaging
|January 1, 1990
PubMed
Summary

This study introduces a new digital B-mode ultrasound system using the Pipelined-Sampled-Delay-Focusing (PSDF) scheme. This innovative approach enhances image resolution through real-time dynamic focusing and steering in medical imaging.

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Area of Science:

  • Medical Imaging
  • Ultrasound Technology
  • Digital Signal Processing

Background:

  • Enhancing ultrasonic B-mode image resolution is crucial for accurate medical diagnosis.
  • Digital techniques for dynamic focusing and steering are essential for advanced ultrasound systems.
  • Conventional digital imaging systems often require bulky memory and complex interpolation circuits.

Purpose of the Study:

  • To present a novel architecture for a fully digital B-mode imaging system.
  • To introduce the Pipelined-Sampled-Delay-Focusing (PSDF) scheme for improved ultrasound imaging.
  • To demonstrate real-time dynamic focusing and steering capabilities in ultrasound.

Main Methods:

  • Implementation of the Pipelined-Sampled-Delay-Focusing (PSDF) scheme.

Related Experiment Videos

  • Development of efficient methods for generating sampling clocks for dynamic focusing and steering.
  • Application of modified bandwidth sampling techniques to reduce signal digitization sampling rates.

    • Main Results:

    • The PSDF scheme effectively eliminates the need for bulky memory addressing and interpolation circuits.
    • Efficient clock generation and modified bandwidth sampling reduce hardware requirements and processing bandwidth.
    • Preliminary experimental results demonstrate the feasibility of real-time dynamic focusing and steering.

    Conclusions:

    • The proposed digital B-mode imaging system architecture offers enhanced resolution and efficiency.
    • The PSDF scheme provides a viable solution for advanced real-time ultrasound imaging.
    • This system enables dynamic focusing and steering in real-time sector imaging using linear phased arrays.