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Updated: Jul 9, 2026

Blood Flow Imaging with Ultrafast Doppler

Blood Flow Imaging with Ultrafast Doppler

Published on: October 14, 2020

Fast B-flow imaging: a method for improving frame rate in Golay coded B-flow imaging.

Claudia Leavens¹, Peter N Burns, Michael D Sherar

¹University of Toronto, Department of Medical Biophysics, Toronto, Ontario, Canada. cleavens@uhnres.utoronto.ca

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

|December 7, 2007

Summary

This summary is machine-generated.

Fast B-flow imaging uses three pulses instead of four to enhance frame rates by 33% for Golay coded B-flow imaging. This method visualizes blood flow by canceling tissue echoes, improving imaging speed.

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Area of Science:

Medical Imaging
Ultrasound Technology
Biomedical Engineering

Background:

Golay coded B-flow imaging is a standard technique for visualizing blood flow.
Improving the frame rate of B-flow imaging is crucial for real-time applications.
Existing methods face limitations in speed and visualization of weak blood signals.

Purpose of the Study:

To develop a faster B-flow imaging technique by reducing the number of input pulses.
To enhance the frame rate of Golay coded B-flow imaging.
To enable simultaneous visualization of tissue and blood echoes.

Main Methods:

A novel technique, fast B-flow imaging, employing three input pulses instead of four.
Utilizing a standard Golay pulse-pair for tissue echo imaging via pulse compression.
Employing cross-correlation with an inverted pulse for cancellation of stationary tissue echoes.
Combining a fraction of tissue echoes with blood echoes for simultaneous display.

Main Results:

Achieved a 33% improvement in frame rate compared to standard Golay coded B-flow imaging.
Demonstrated cancellation of strong tissue echoes to visualize weaker blood echoes.
Enabled visualization of both tissue and blood echoes in a single grayscale image.
Quantitatively analyzed the impact of axial and lateral motion on imaging performance.

Conclusions:

Fast B-flow imaging offers a significant frame rate improvement over standard techniques.
The method effectively visualizes blood flow by suppressing tissue interference.
This technique provides a valuable advancement for real-time ultrasound blood flow imaging.