A novel portable device for crawling waves sonoelastography: experimental study

Pedro A. Ancajima; Stefano E. Romero; Eduardo A. Gonzalez; Benjamín Castañeda

doi:10.1117/12.2542483

3 January 2020 A novel portable device for crawling waves sonoelastography: experimental study

Pedro A. Ancajima, Stefano E. Romero, Eduardo A. Gonzalez, Benjamín Castañeda

Proceedings Volume 11330, 15th International Symposium on Medical Information Processing and Analysis; 113300U (2020) https://doi.org/10.1117/12.2542483
Event: 15th International Symposium on Medical Information Processing and Analysis, 2019, Medelin, Colombia

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 (SWS_b) of the homogeneous phantom with previous studies (e.g. SWS_b = 3.58± 0.42 m/s). In the same way, the SWS of the inclusion (SWS_i) was distinguished from the background with an accurate SWS value (e.g. SWS_i = 5.64 ±0.42 m/s and SWS_b = 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.

Citation Download Citation

Pedro A. Ancajima, Stefano E. Romero, Eduardo A. Gonzalez, and Benjamín Castañeda "A novel portable device for crawling waves sonoelastography: experimental study", Proc. SPIE 11330, 15th International Symposium on Medical Information Processing and Analysis, 113300U (3 January 2020); https://doi.org/10.1117/12.2542483

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available