Modified Regularized Wavelength Average Velocity Estimator for normal excitation setup

C. Valeria Leon, Stefano E. Romero, Sebastian Merino, Eduardo Gonzalez, Benjamin Castaneda

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

2 Citas (Scopus)

Resumen

Crawling Waves Sonoelastography (CWS) is an ultrasound elastography approach for the Shear Waves Speed (SWS) estimation. Several studies show promising results for tissue characterization. The algorithms used to calculate the SWS have been commonly implemented considering an opposing vibration sources to the side of the tissue of interest. However, implementing this mechanical setup has important limitations considering the geometry of the body. For that reason, a propagation from the top to the surface can be useful. Previous estimators such as Phase Derivative have been modified and tested in phantom studies, however, the presences of artifacts limited the performed of the SWS map. In this study, the Regularized Wavelength Average Velocity Estimator (R-WAVE) technique is modified and evaluated (RWm) to be used for normal propagation. The results of heterogeneous simulations and phantoms experiments showed consistent results with the literature (ie: Simulations Max Bias PDm 11.64 % • RWm 10.21 %, Max CNR PDm 37.82 dB • RWm 44.42 dB, Phantom Experiments Max Bias PDm 15.42 % • RWm 13.99 %, Max CNR PDm 24.14 dB • RWm 26.40 dB). The result of this study shows the potential of RWm to characterize the stiffness of the tissue as well as to differentiate tumors on in vivo applications.Clinical relevance This study presents a modification of the regularized shear wave speed estimator based on crawling waves sonoelastography approach for medical tissue analysis. This technique can be used to discriminate benignant from malignant tumors.

Idioma originalInglés
Título de la publicación alojada43rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2021
EditorialInstitute of Electrical and Electronics Engineers Inc.
Páginas3990-3993
Número de páginas4
ISBN (versión digital)9781728111797
DOI
EstadoPublicada - 2021
Evento43rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2021 - Virtual, Online, México
Duración: 1 nov. 20215 nov. 2021

Serie de la publicación

NombreProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
ISSN (versión impresa)1557-170X

Conferencia

Conferencia43rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2021
País/TerritorioMéxico
CiudadVirtual, Online
Período1/11/215/11/21

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