A comparative study between parallel and normal excitation for crawling wave sonoelastography

Stefano E. Romero, Eduardo A. Gonzalez, Roberto Lavarello, Benjamin Castaneda

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

7 Citas (Scopus)

Resumen

Crawling wave sonoelastography (CWS) provides quantitative stiffness information from an examined tissue by the application of two mechanical vibrations that generates an interference pattern which is analyzed to reconstruct a shear wave speed (SWS) image. While CWS performance using parallel excitation setup (PES) has been widely studied in the literature, its implementation is complicated to apply in tissue (i.e. breast,liver) because often requires a normal excitation setup. The aim of this study is to validate the SWS estimation using a normal excitation setup with two different types of coupling attachments for the surface -i.e. surface plate (SP), rounded head (RH)-and perform a quantitative comparison among the three techniques (PES,SP,RH) in homogeneous and heterogeneous gelatin phantoms.The comparison of the three excitation methods was performed using signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), coefficient of variation (CV) and bias over a range of excitation frequencies.The results in the background (PES:3:74 - 0:14 m/s, SP: 3:43 - 0:14 m/s and RH: 3:32 - 0:07 m/s) and in the inclusion (PES:4:96 - 0:18 m/s, SP: 4:88 - 0:32 m/s and RH: 4:64 - 0:29 m/s) show that both normal excitation setups are comparable to the PES to estimate the SWS. This suggests that this type of setup could be used for ex vivo and in vivo analysis.

Idioma originalInglés
Título de la publicación alojada12th International Symposium on Medical Information Processing and Analysis
EditoresEduardo Romero, Natasha Lepore, Jorge Brieva, Ignacio Larrabide
EditorialSPIE
ISBN (versión digital)9781510607781
DOI
EstadoPublicada - 2017
Evento12th International Symposium on Medical Information Processing and Analysis, SIPAIM 2016 - Tandil, Argentina
Duración: 5 dic. 20167 dic. 2016

Serie de la publicación

NombreProceedings of SPIE - The International Society for Optical Engineering
Volumen10160
ISSN (versión impresa)0277-786X
ISSN (versión digital)1996-756X

Conferencia

Conferencia12th International Symposium on Medical Information Processing and Analysis, SIPAIM 2016
País/TerritorioArgentina
CiudadTandil
Período5/12/167/12/16

Huella

Profundice en los temas de investigación de 'A comparative study between parallel and normal excitation for crawling wave sonoelastography'. En conjunto forman una huella única.

Citar esto