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Updated: Sep 2, 2025

Proximal Cadaveric Femur Preparation for Fracture Strength Testing and Quantitative CT-based Finite Element Analysis

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Published on: March 11, 2017

Femoral neck phantom imaging using time-domain topological energy method.

Paulo Tadeu C R Rosa¹, Aldo José Fontes-Pereira², Quentin Grimal³

¹Laboratório de Ultrassom, Programa de Engenharia Biomédica-COPPE, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-914, Brazil.

The Journal of the Acoustical Society of America

|August 5, 2022

Summary

This summary is machine-generated.

This study introduces time-domain topological energy (TDTE) for clearer ultrasonic bone imaging. The method shows promise for visualizing bone structures, despite minor thickness errors in phantom models.

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Area of Science:

Biomedical Engineering
Medical Imaging
Acoustics

Background:

Ultrasonic bone imaging is challenging due to low signal energy from internal bone structures.
Accurate reconstruction of bone echographic images is crucial for diagnostic applications.

Purpose of the Study:

To propose and evaluate a novel time-domain topological energy (TDTE) method for reconstructing bone echographic images.
To assess the efficacy of TDTE in visualizing bone-mimicking phantom geometry.

Main Methods:

Utilized a numerical model simulating experimental data acquisition with a 5 MHz linear phased-array transducer.
Implemented the k-wave toolbox for numerical modeling and image reconstruction.
Calculated TDTE images from forward and adjoint fields, incorporating time-reversed experimental signal residues.

Main Results:

Achieved good agreement between the geometry of the bone phantom and the reconstructed ultrasonic images.
Observed thickness evaluation errors, potentially linked to inaccurate velocity model assumptions.
Demonstrated the potential of TDTE for improved ultrasonic bone imaging.

Conclusions:

The TDTE method shows promising results for ultrasonic bone imaging.
Further refinement of velocity models is needed to improve thickness accuracy.
Future work aims to apply TDTE to real femoral neck imaging.