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dc.contributor.authorCallejas, Antonio
dc.contributor.authorGómez, Antonio
dc.contributor.authorFaris, Inas
dc.contributor.authorMelchor, Juan
dc.contributor.authorRus Carlborg, Guillermo
dc.identifier.citationCallejas, A., Gomez, A., Faris, I. H., Melchor, J., & Rus, G. (2019). Kelvin–Voigt Parameters Reconstruction of Cervical Tissue-Mimicking Phantoms Using Torsional Wave Elastography. Sensors, 19(15), 3281.es_ES
dc.description.abstractThe reconstruction of viscous properties of soft tissues, and more specifically, of cervical tissue is a challenging problem. In this paper, a new method is proposed to reconstruct the viscoelastic parameters of cervical tissue-mimicking phantoms by a Torsional Wave Elastography (TWE) technique. The reconstruction method, based on a Probabilistic Inverse Problem (PIP) approach, is presented and experimentally validated against Shear Wave Elastography (SWE). The anatomy of the cervical tissue has been mimicked by means of a two-layer gelatine phantom that simulates the epithelial and connective layers. Five ad hoc oil-in-gelatine phantoms were fabricated at different proportion to test the new reconstruction technique. The PIP approach was used for reconstructing the Kelvin-Voigt (KV) viscoelastic parameters by comparing the measurements obtained from the TWE technique with the synthetic signals from a Finite Difference Time Domain (FDTD) KV wave propagation model. Additionally, SWE tests were realized in order to characterize the viscoelastic properties of each batch of gelatine. Finally, validation was carried out by comparing the KV parameters inferred from the PIP with those reconstructed from the shear wave dispersion curve obtained from the SWE measurements. In order to test the degree of agreement between both techniques, a Student’s T-test and a Pearson’s correlation study were performed. The results indicate that the proposed method is able to reconstruct the KV viscoelastic properties of the cervical tissue, for both the epithelial and connective layers, as well as the thickness of the first layer with acceptable accuracy.es_ES
dc.description.sponsorshipThis research was supported by the Ministry of Education, DPI2017-83859-R, DPI2014-51870-R, and UNGR15-CE-3664, Ministry of Health DTS15/00093, and Junta de Andalucía PI16/00339, PI-0107-2017, and PIN-0030-2017 projects.es_ES
dc.rightsAtribución 3.0 España*
dc.subjectTorsional Wave Elastographyes_ES
dc.subjectShear Wave Elastography Imaginges_ES
dc.subjectTissue mimicking phantomes_ES
dc.subjectKelvin-Voigt modeles_ES
dc.subjectCervical biomechanicses_ES
dc.titleKelvin–Voigt Parameters Reconstruction of Cervical Tissue-Mimicking Phantoms Using Torsional Wave Elastographyes_ES

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Atribución 3.0 España
Except where otherwise noted, this item's license is described as Atribución 3.0 España