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Related Experiment Videos

Code compression after demodulation in ultrasound flow imaging systems.

Heng Zhao1, Kai Liu, Shangkai Gao

  • 1Biomedical Engineering Department of Tsinghua University, Beijing, China (phone: 8610-62781539; fax: 8610-62785472;

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 7, 2007
PubMed
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This study presents an ultrasound flow imaging system using single-transmit coded excitation. The proposed system achieves effective code compression, enabling lower analog-to-digital sampling rates for improved performance.

Area of Science:

  • Medical Imaging
  • Ultrasound Technology
  • Signal Processing

Background:

  • Ultrasound flow imaging is crucial for non-invasive physiological assessment.
  • Traditional systems face limitations in resolution and sampling rate.
  • Coded excitation offers potential for enhanced ultrasound performance.

Purpose of the Study:

  • To investigate a single-transmit coded excitation ultrasound flow imaging system.
  • To demonstrate the equivalence of code compression strategies.
  • To propose a system with a reduced analog-to-digital sampling rate.

Main Methods:

  • Utilizing single-transmit coded excitation in ultrasound flow imaging.
  • Employing oversampled code sequences modulated by a base code.

Related Experiment Videos

  • Implementing and evaluating code compression before or after demodulation.
  • Performing system performance evaluation through simulations.

    • Main Results:

    • Demonstrated the equivalence of code compression (pre- or post-demodulation).
    • Proposed a coded excitation system capable of low analog-to-digital sampling rates.
    • Simulation results indicate the feasibility and performance of the proposed system.

    Conclusions:

    • Single-transmit coded excitation is a viable approach for ultrasound flow imaging.
    • Code compression techniques can be effectively applied to reduce sampling rate requirements.
    • The proposed system shows promise for efficient and high-performance ultrasound flow imaging.