Regularized wavelength average velocity estimator for quantitative ultrasound elastography

Eduardo González, Pu Li, Juvenal Ormachea, Kevin Parker, Roberto Lavarello, Benjamín Castañeda

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

5 Citas (Scopus)

Resumen

Crawling Wave Sonoelastography (CWS) provides quantitative information of tissue stiffness by the application of two mechanical vibrations into the tissue. However, most of the shear wave speed (SWS) estimators for CWS report lateral artifacts that could undermine the detection accuracy of lesion by increasing the false-positive rate. In previous works, a low-cost estimator (WAVE) based on the crawling wave spatial wavelength (CSPW) averaging along the slow-time domain was proposed, where an underestimation in stiffer inclusions with size smaller than the CSPW was reported. In this study, an improved estimator is developed from the linear model of the CSPW function and solved with an implementation of generalized Tikhonov regularization. Experiments with inclusion phantoms demonstrate that the new estimator copes with the underestimation of WAVE while increase lateral resolution and contrast-to-noise ratio in comparison with other estimators found in the literature.

Idioma originalInglés
Título de la publicación alojada2016 IEEE International Ultrasonics Symposium, IUS 2016
EditorialIEEE Computer Society
ISBN (versión digital)9781467398978
DOI
EstadoPublicada - 1 nov. 2016
Evento2016 IEEE International Ultrasonics Symposium, IUS 2016 - Tours, Francia
Duración: 18 set. 201621 set. 2016

Serie de la publicación

NombreIEEE International Ultrasonics Symposium, IUS
Volumen2016-November
ISSN (versión impresa)1948-5719
ISSN (versión digital)1948-5727

Conferencia

Conferencia2016 IEEE International Ultrasonics Symposium, IUS 2016
País/TerritorioFrancia
CiudadTours
Período18/09/1621/09/16

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