A rapid and non-invasive method for measuring the peak positive pressure of HIFU fields by a laser beam

A rapid and non-invasive method for measuring the peak positive pressure of HIFU fields by a laser beam

Abstract Based on the acousto-optic interaction, we propose a laser deflection method for rapidly, non-invasively and quantitatively measuring the peak positive pressure of HIFU fields. In the characterization of HIFU fields, the effect of nonlinear propagation is considered. The relation between th...

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Autores principales: Hua Wang, Deping Zeng, Ziguang Chen, Zengtao Yang
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
Materias:
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Science
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Acceso en línea:https://doaj.org/article/181fda3cdaaa4c4cbed215ff951836e8
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spelling oai:doaj.org-article:181fda3cdaaa4c4cbed215ff951836e82021-12-02T16:06:00ZA rapid and non-invasive method for measuring the peak positive pressure of HIFU fields by a laser beam10.1038/s41598-017-00892-42045-2322https://doaj.org/article/181fda3cdaaa4c4cbed215ff951836e82017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00892-4https://doaj.org/toc/2045-2322Abstract Based on the acousto-optic interaction, we propose a laser deflection method for rapidly, non-invasively and quantitatively measuring the peak positive pressure of HIFU fields. In the characterization of HIFU fields, the effect of nonlinear propagation is considered. The relation between the laser deflection length and the peak positive pressure is derived. Then the laser deflection method is assessed by comparing it with the hydrophone method. The experimental results show that the peak positive pressure measured by laser deflection method is little higher than that obtained by the hydrophone, confirming that they are in reasonable agreement. Considering that the peak pressure measured by hydrophones is always underestimated, the laser deflection method is assumed to be more accurate than the hydrophone method due to the absence of the errors in hydrophone spatial-averaging measurement and the influence of waveform distortion on hydrophone corrections. Moreover, noting that the Lorentz formula still remains applicable to high-pressure environments, the laser deflection method exhibits a great potential for measuring HIFU field under high-pressure amplitude. Additionally, the laser deflection method provides a rapid way for measuring the peak positive pressure, without the scan time, which is required by the hydrophones.Hua WangDeping ZengZiguang ChenZengtao YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Hua Wang
Deping Zeng
Ziguang Chen
Zengtao Yang
A rapid and non-invasive method for measuring the peak positive pressure of HIFU fields by a laser beam
description Abstract Based on the acousto-optic interaction, we propose a laser deflection method for rapidly, non-invasively and quantitatively measuring the peak positive pressure of HIFU fields. In the characterization of HIFU fields, the effect of nonlinear propagation is considered. The relation between the laser deflection length and the peak positive pressure is derived. Then the laser deflection method is assessed by comparing it with the hydrophone method. The experimental results show that the peak positive pressure measured by laser deflection method is little higher than that obtained by the hydrophone, confirming that they are in reasonable agreement. Considering that the peak pressure measured by hydrophones is always underestimated, the laser deflection method is assumed to be more accurate than the hydrophone method due to the absence of the errors in hydrophone spatial-averaging measurement and the influence of waveform distortion on hydrophone corrections. Moreover, noting that the Lorentz formula still remains applicable to high-pressure environments, the laser deflection method exhibits a great potential for measuring HIFU field under high-pressure amplitude. Additionally, the laser deflection method provides a rapid way for measuring the peak positive pressure, without the scan time, which is required by the hydrophones.
format article
author Hua Wang
Deping Zeng
Ziguang Chen
Zengtao Yang
author_facet Hua Wang
Deping Zeng
Ziguang Chen
Zengtao Yang
author_sort Hua Wang
title A rapid and non-invasive method for measuring the peak positive pressure of HIFU fields by a laser beam
title_short A rapid and non-invasive method for measuring the peak positive pressure of HIFU fields by a laser beam
title_full A rapid and non-invasive method for measuring the peak positive pressure of HIFU fields by a laser beam
title_fullStr A rapid and non-invasive method for measuring the peak positive pressure of HIFU fields by a laser beam
title_full_unstemmed A rapid and non-invasive method for measuring the peak positive pressure of HIFU fields by a laser beam
title_sort rapid and non-invasive method for measuring the peak positive pressure of hifu fields by a laser beam
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/181fda3cdaaa4c4cbed215ff951836e8
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