Abstract
The assessment of biological tissue elasticity is crucial in medical applications such as breast cancer or hepatic fibrosis diagnosis. Ultrasound elastography based on shear waves is a technique that provides information about tissue mechanical properties. In this study, we propose a new elastographic technique based on the transfer of angular momentum to soft tissue using acoustic vortices. While conventional focused beams push tissue in the propagation direction, vortex beams not only push but also apply torsion, allowing for more effective deformation. In vitro and ex vivo experiments support the effectiveness of this technique by showing that acoustic vortices reduce damage to healthy tissue by decreasing the mechanical index of the pulse. Increasing the magnitude of deformation improves the signal-to-noise ratio of induced shear waves and the robustness of algorithms for estimating tissue elasticity. Our research highlights the potential of elastography with acoustic vortices for a more precise and safe assessment of tissue elasticity in clinical applications.
BibTeX citation
@inproceedings{GonzalezMateoTEC2024,
author = {Enrique González-Mateo and Francisco Camarena and Noé Jiménez},
booktitle = {Tecniacústica 2024: 55º Congreso Español de Acústica. XIII Congreso Ibérico de Acústica. Faro, Portugal. 11-13 September},
doi = {http://www.spacustica.pt/acustica2024/pdf/livro_comunicacoes_v5.pdf},
editor = {Conference proceedings},
month = {09},
organization = {Sociedade Portuguesa de Acústica},
pages = {656-660},
series = {Oral},
title = {Vórtices acústicos para medir la elasticidad de tejidos biológicos},
url = {http://www.spacustica.pt/acustica2024/pdf/livro_comunicacoes_v5.pdf},
year = {2024}
}