[Development of Synchronous Arbitrary Gate-PW Doppler for Ultrasound Microvascular Imaging and Preliminary...

Area of Science:

• Medical Imaging
• Biomedical Engineering
• Ultrasound Technology

Background:

• Ultra micro angiography (UMA) improves sensitivity and spatial resolution in blood flow imaging.
• Clinical needs demand quantitative measurements for microvascular imaging.

Purpose of the Study:

• To demonstrate the technical features and performance of a microflow quantitative analysis function based on UMA.
• To validate the Synchronous Arbitrary Gate-PW (SAG-PW) measurement technique.

Main Methods:

• Validation using a Doppler flow phantom and a moving string phantom.
• Comparison of SAG-PW measurements with traditional Pulse Wave (PW) methods.
• Assessment of measurement errors and linear correlation.

Main Results:

• SAG-PW measurements closely matched traditional PW results, with an average error of 3.9%.
• Strong linear correlation (slope and R-value near 1) was observed between SAG-PW and PW.
• Relative errors for TAMean and SAG-PW were within 10% across different phantom settings.

Conclusions:

• The developed microflow quantitative analysis function, based on UMA, is technically sound.
• SAG-PW demonstrates reliable accuracy and precision for microvascular quantitative measurements.
• This technology shows promise for advancing clinical microvascular imaging applications.