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Ultrasonography

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called a...

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Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population

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Published on: January 31, 2025

Slow and fast ultrasonic wave detection improvement in human trabecular bones using Golay code modulation.

Bahman Lashkari¹, Amir Manbachi, Andreas Mandelis

¹Center for Advanced Diffusion-Wave Technologies (CADIFT), Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada. bahman@mie.utoronto.ca

The Journal of the Acoustical Society of America

|September 18, 2012

Summary

Identifying bone waves is difficult but crucial for monitoring osteoporosis. Golay code excitation effectively enhances signals, offering superior resolution for analyzing bone integrity compared to other methods.

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Wideband Optical Detector of Ultrasound for Medical Imaging Applications

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Last Updated: May 18, 2026

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population

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Wideband Optical Detector of Ultrasound for Medical Imaging Applications

Wideband Optical Detector of Ultrasound for Medical Imaging Applications

Published on: May 11, 2014

Area of Science:

Biomedical Engineering
Medical Physics
Materials Science

Background:

Trabecular bone integrity is vital for skeletal health.
Osteoporosis monitoring requires accurate assessment of bone properties.
Identifying fast and slow wave propagation in bone is challenging due to signal overlap and attenuation.

Purpose of the Study:

To investigate the efficacy of coded excitation methods for identifying wave propagation in trabecular bone.
To compare the performance of single-sine cycle pulse, Golay code, and chirp excitations.
To determine the optimal method for monitoring bone integrity and osteoporosis.

Main Methods:

Application of different coded excitation techniques: single-sine cycle pulse, Golay code, and chirp.
Analysis of wave propagation characteristics, including temporal overlap and attenuation.
Evaluation of signal enhancement, resolution, and sidelobe ambiguity.

Main Results:

Golay code excitation demonstrated superior performance compared to single-sine and chirp methods.
Golay code provided significant signal enhancement.
Excellent resolution was achieved with Golay code, free from sidelobe ambiguities.

Conclusions:

Golay code excitation is a highly effective method for identifying fast and slow waves in trabecular bone.
This technique offers a promising approach for non-invasive monitoring of bone integrity and osteoporosis.
The superior signal enhancement and resolution of Golay code make it advantageous over other tested methods.