DBA Porosity Analysis of Human Bones by Double-Beam Acoustography

Le résumé fourni par la source

Dual-beam acustography is an elastography technique that uses focused ultrasonic radiation to extract mechanical information through spectral analysis of the acoustic signal generated by the interaction of the ultrasonic pulse with the medium's structure. This study focuses on applying dual-beam acustography to analyze the porosity of human bone. The project involves measuring and analyzing trabecular bone samples from human vertebrae, with ethical approval. These samples, previously tested for mechanical properties at the Laboratory of Manufacturing and Precision Engineering at the School of Engineering of São Carlos, were prepared using a 3D-printed support and analyzed in a water tank with an ultrasonic transducer and hydrophone. Additionally, photoacoustic microscopy was incorporated to provide a complementary perspective, enhancing the understanding of bone porosity. The comparison between techniques revealed similar signals for assessing bone porosity. The acoustic signal showed moderate correlation with the elastic modulus, suggesting that samples with higher elastic modulus exhibit higher signals. The ultimate tensile strength (TLRF) demonstrated a strong correlation with the signal, while the ultimate strain (DLRF) showed a weak correlation. These results indicate that TLRF is a good indicator of bone integrity, whereas DLRF may not be suitable for general evaluations.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.