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Dynamic nonlinear focal shift in amplitude modulated moderately focused acoustic beams

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Dynamic nonlinear focal shift in amplitude modulated moderately focused acoustic beams

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dc.contributor.author Jimenez, Noe es_ES
dc.contributor.author Camarena Femenia, Francisco es_ES
dc.contributor.author González-Salido, Nuria es_ES
dc.date.accessioned 2020-07-31T03:31:21Z
dc.date.available 2020-07-31T03:31:21Z
dc.date.issued 2017-03 es_ES
dc.identifier.issn 0041-624X es_ES
dc.identifier.uri http://hdl.handle.net/10251/149079
dc.description.abstract [EN] The phenomenon of the displacement of the position of the pressure, intensity and acoustic radiation force maxima along the axis of focused acoustic beams under increasing driving amplitudes (nonlinear focal shift) is studied for the case of a moderately focused beam excited with continuous and 25 kHz amplitude modulated signals, both in water and tissue. We prove that in amplitude modulated beams the linear and nonlinear propagation effects coexist in a semi-period of modulation, giving place to a complex dynamic behavior, where the singular points of the beam (peak pressure, rarefaction, intensity and acoustic radiation force) locate at different points on axis as a function of time. These entire phenomena are explained in terms of harmonic generation and absorption during the propagation in a lossy nonlinear medium both for a continuous and an amplitude modulated beam. One of the possible applications of the acoustic radiation force displacement is the generation of shear waves at different locations by using a focused mono-element transducer excited by an amplitude Modulated signal. (C) 2016 Elsevier B.V. All rights reserved. es_ES
dc.description.sponsorship FC acknowledge financial support from the AICO/2016-108 program of the Generalitat Valenciana. NJ acknowledge financial support from the FPI Grant PAID-2011 from the Universitat Politecnica de Valencia. NGS acknowledge financial support from DPI2013-42236-R Project of the Spanish Ministry of Economy and Competitiveness, S2013/MIT-3024 of the Community of Madrid and from FPU Grant 12/02187 from the Spanish Ministry of Education, Culture and Sport. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation UPV/PAID-2011 es_ES
dc.relation info:eu-repo/grantAgreement/MINECO//DPI2013-42236-R/ES/TECNOLOGIAS AVANZADAS DE IMAGEN ULTRASONICA PARA DIAGNOSTICO PRECOZ DE CANCER DE MAMA/ es_ES
dc.relation CAM/S2013/MIT-3024 es_ES
dc.relation info:eu-repo/grantAgreement/MECD//FPU12%2F02187/ES/FPU12%2F02187/ es_ES
dc.relation GENERALITAT VALENCIANA/AICO/2016/108 es_ES
dc.relation.ispartof Ultrasonics es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Nonlinear acoustics es_ES
dc.subject Acoustic radiation force es_ES
dc.subject Biomedical ultrasound es_ES
dc.subject Nonlinear focal shift es_ES
dc.subject Finite-amplitude acoustic beams es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Dynamic nonlinear focal shift in amplitude modulated moderately focused acoustic beams es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.ultras.2016.11.021 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Instrumentación para Imagen Molecular - Institut d'Instrumentació per a Imatge Molecular es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres es_ES
dc.description.bibliographicCitation Jimenez, N.; Camarena Femenia, F.; González-Salido, N. (2017). Dynamic nonlinear focal shift in amplitude modulated moderately focused acoustic beams. Ultrasonics. 75:106-114. https://doi.org/10.1016/j.ultras.2016.11.021 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.ultras.2016.11.021 es_ES
dc.description.upvformatpinicio 106 es_ES
dc.description.upvformatpfin 114 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 75 es_ES
dc.identifier.pmid 27939786 es_ES
dc.relation.pasarela S\340702 es_ES
dc.contributor.funder Comunidad de Madrid es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Universitat Politècnica de València es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
dc.contributor.funder Ministerio de Educación, Cultura y Deporte es_ES


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