Publicación:
Reverberant shear wave fields and estimation of tissue properties

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dc.contributor.author Parker K.J. es_PE
dc.contributor.author Ormachea J. es_PE
dc.contributor.author Zvietcovich F. es_PE
dc.contributor.author Castaneda B. es_PE
dc.date.accessioned 2024-05-30T23:13:38Z
dc.date.available 2024-05-30T23:13:38Z
dc.date.issued 2017
dc.description.abstract The determination of shear wave speed is an important subject in the field of elastography, since elevated shear wave speeds can be directly linked to increased stiffness of tissues. MRI and ultrasound scanners are frequently used to detect shear waves and a variety of estimators are applied to calculate the underlying shear wave speed. The estimators can be relatively simple if plane wave behavior is assumed with a known direction of propagation. However, multiple reflections from organ boundaries and internal inhomogeneities and mode conversions can create a complicated field in time and space. Thus, we explore the mathematics of multiple component shear wave fields and derive the basic properties, from which efficient estimators can be obtained. We approach this problem from the historic perspective of reverberant fields, a conceptual framework used in architectural acoustics and related fields. The framework can be recast for the alternative case of shear waves in a bounded elastic media, and the expected value of displacement patterns in shear reverberant fields are derived, along with some practical estimators of shear wave speed. These are applied to finite element models and phantoms to illustrate the characteristics of reverberant fields and provide preliminary confirmation of the overall framework. © 2017 Institute of Physics and Engineering in Medicine.
dc.description.sponsorship Fondo Nacional de Desarrollo Científico y Tecnológico - Fondecyt
dc.identifier.doi https://doi.org/10.1088/1361-6560/aa5201
dc.identifier.scopus 2-s2.0-85010053570
dc.identifier.uri https://hdl.handle.net/20.500.12390/2788
dc.language.iso eng
dc.publisher Institute of Physics Publishing
dc.relation.ispartof Physics in Medicine and Biology
dc.rights info:eu-repo/semantics/openAccess
dc.subject ultrasound
dc.subject elastography es_PE
dc.subject MRE es_PE
dc.subject reverberant fields es_PE
dc.subject shear wave speed estimators es_PE
dc.subject shear waves es_PE
dc.subject tissue stiffness es_PE
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.03.07
dc.title Reverberant shear wave fields and estimation of tissue properties
dc.type info:eu-repo/semantics/article
dspace.entity.type Publication
oairecerif.author.affiliation #PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation #PLACEHOLDER_PARENT_METADATA_VALUE#
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