Measurement of surface acoustic waves in high-frequency ultrasound: Preliminary results

Ana Cecilia Saavedra, Fernando Zvietcovich, Roberto J. Lavarello, Benjamin Castaneda

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

8 Citas (Scopus)

Resumen

Skin lesions change elastic properties near the surface. In the last decades, several non-invasive elastography techniques have been developed for detecting the mechanical properties of tissue. In particular, harmonic elastography is characterized for inducing shear wave propagation by an external vibrator in order to estimate shear modulus. However, near the boundary region, propagation is governed by surface acoustic waves (SAW). This paper combines crawling waves elastography with a high-frequency ultrasound (HFUS) system for the estimation of the SAW-to-shear compensation factor when ultrasound (US) gel is used as coupling interface. Experiments explore the SAWspeed in a homogeneous phantom with a solid-water interface in order to corroborate theoretical findings. Subsequently, experiments in a solid-US gel interface are conducted in order to find the correct compensation factor. Preliminary results suggest that SAW propagation can be detected using HFUS, and shear velocity maps can be generated by applying the estimated empirical correction factor. This study will potentially avoid the underestimation of shear modulus when using SAW-based HFUS elastography which is promising for the better diagnosis of skin diseases.

Idioma originalInglés
Título de la publicación alojada2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Subtítulo de la publicación alojadaSmarter Technology for a Healthier World, EMBC 2017 - Proceedings
EditorialInstitute of Electrical and Electronics Engineers Inc.
Páginas3000-3003
Número de páginas4
ISBN (versión digital)9781509028092
DOI
EstadoPublicada - 13 set. 2017
Evento39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2017 - Jeju Island, República de Corea
Duración: 11 jul. 201715 jul. 2017

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

Conferencia39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2017
País/TerritorioRepública de Corea
CiudadJeju Island
Período11/07/1715/07/17

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