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Related Experiment Video

Updated: Jul 6, 2025

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Published on: March 6, 2019

A direct wavepath-based element localization algorithm to enable flexible ultrasound array imaging.

C L Willey¹, V W Chen¹, A T Juhl²

¹Air Force Research Laboratory, Wright-Patterson AFB, OH, 45433, USA; UES, Inc., Dayton, OH, 45432, USA.

|January 4, 2024

Summary

This summary is machine-generated.

A new algorithm accurately determines flexible ultrasonic array element locations on unknown surfaces. This method improves phased array ultrasound imaging by optimizing array positioning for better data acquisition.

Keywords:

Array element localization Beamforming Optimization Phased array Traveltimes

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Area of Science:

Non-destructive testing
Ultrasonic imaging
Robotics and automation

Background:

Flexible ultrasonic arrays are crucial for inspecting complex geometries.
Accurate element positioning is essential for reliable ultrasonic imaging.
Current methods struggle with unknown or variable surface geometries.

Purpose of the Study:

To develop and validate an algorithm for determining ultrasonic array element locations on surfaces with unknown geometry.
To integrate this localization algorithm with phased array ultrasound imaging techniques.
To demonstrate the algorithm's efficacy using the total focusing method with full matrix capture.

Main Methods:

An algorithm was developed to compute direct wavepath traveltimes between array elements.
Traveltime data was used as input for an optimization scheme to determine relative array element locations.
The determined element locations were integrated into a phased array ultrasound imaging algorithm.
The total focusing method with full matrix capture served as a testbed for validation.

Main Results:

The algorithm successfully determined the relative locations of ultrasonic array elements on surfaces of unknown geometry.
Integration of the localization algorithm improved the accuracy of phased array ultrasound imaging.
Simulations and experimental data confirmed the algorithm's effectiveness and robustness.

Conclusions:

The developed algorithm provides a robust solution for localizing flexible ultrasonic arrays on complex surfaces.
This localization technique enhances the performance of phased array ultrasound imaging systems.
The method holds significant potential for advanced non-destructive testing and inspection applications.