Title
A novel portable device for crawling waves sonoelastography: Experimental study
Date Issued
01 January 2020
Access level
metadata only access
Resource Type
conference paper
Publisher(s)
SPIE
Abstract
Crawling Waves Sonoelastography (CWS) is an elastography technique based on an interference pattern produced by the application of two external vibration sources. In this study, a 3D printed holder was designed to overcome the compatibility limitations of normal excitation modules for different ultrasound systems, previously developed in the literature. This holder was assembled with a transducer and two voice coil actuators, and its performance was tested in homogeneous and inclusion tissue-mimicking phantom. A phase derivative estimator was used to reconstruct the shear wave speed (SWS) map. The coefficient of variation (CV), bias and contrast-to-noise ratio (CNR) were used as quantitative metrics for comparison. These metrics have shown a comparable SWS estimation in the background (SWSb) of the homogeneous phantom with previous studies (e.g. SWSb = 3.58± 0.42 m/s). In the same way, the SWS of the inclusion (SWSi) was distinguished from the background with an accurate SWS value (e.g. SWSi = 5.64 ±0.42 m/s and SWSb = 3.70 ±0.16 m/s). The results suggest that the portable device is capable of achieving a good performance according to their values of bias, CV and CNR. The extension of this work is oriented to ex vivo and in vivo experiments.
Volume
11330
Language
English
OCDE Knowledge area
Tecnología médica de laboratorio (análisis de muestras, tecnologías para el diagnóstico)
Scopus EID
2-s2.0-85081134438
ISBN
9781510634275
Source
Proceedings of SPIE - The International Society for Optical Engineering
ISSN of the container
0277786X
Sponsor(s)
This work was supported by the Fondo Nacional de Desarrollo Cientifico y Tecnologico-PERU under grant 232-2018-FONDECYT from the Peruvian Goverment.
Sources of information: Directorio de Producción Científica Scopus