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Ultrasonic Shear Wave Elasticity Imaging Sequencing and Data Processing Using a Verasonics Research Scanner.

Yufeng Deng, Ned C Rouze, Mark L Palmeri

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

|January 17, 2017

Summary

This study details protocols for ultrasound shear wave elasticity imaging (SWEI) using a Verasonics system. It provides methods for accurate tissue stiffness measurement and ensures system reliability.

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Area of Science:

Biomedical Engineering
Medical Imaging
Ultrasound Technology

Background:

Ultrasound elasticity imaging estimates tissue stiffness.
Shear wave elasticity imaging (SWEI) measures shear wave speed for stiffness quantification.
Acoustic radiation force excitation is used in SWEI.

Purpose of the Study:

To present sequencing and data processing protocols for SWEI.
To detail parameter selection for Verasonics programming scripts.
To provide calibration procedures for SWEI system accuracy and safety.

Main Methods:

Detailed discussion of Verasonics programming script sequence parameters.
Demonstration of a data processing pipeline for group shear wave speed (SWS) calculation.
Inclusion of tissue motion estimation, data filtering, and SWS estimation techniques.

Main Results:

Established protocols for SWEI sequencing and data processing.
Provided detailed guidance on Verasonics system parameter selection.
Outlined calibration procedures for beam position, scanner timing, and transducer heating.

Conclusions:

The presented protocols facilitate accurate SWEI measurements.
Calibration procedures help mitigate SWS measurement bias and prevent transducer damage.
This work offers a comprehensive guide for implementing SWEI on Verasonics systems.