Abstract
We present a novel method of elastography based on acoustic vortices to transfer angular momentum to tissue in addition to linear momentum. Focused vortex beams can push and twist tissue, and the rotation direction of the applied torque can be dynamically controlled by the modulation of the topological charge of the vortex. The technique results in a robust excitation of shear waves with quasi-omnidirectional radiation pattern and arbitrary waveform, which may have a great impact in imaging performance for elastography.
BibTeX citation
@inproceedings{JimenezIEEE2020,
author = {Noé Jiménez and José M. Benlloch and Francisco Camarena},
booktitle = {IUS 2020: IEEE International Ultrasonics Symposium. Las Vegas, USA. 7-11 September},
doi = {https://doi.org/10.1109/IUS46767.2020.9251417},
editor = {2020 IEEE International Ultrasonics Symposium (IUS)},
isbn = {ISBN: 978-84-87985-30-4},
month = {9},
organization = {Institute of Electrical and Electronics Engineers},
pages = {1-4},
publisher = {IEEE},
series = {Oral},
title = {A new elastographic technique using acoustic vortices},
url = {https://ieeexplore.ieee.org/abstract/document/9251417},
year = {2020}
}