Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Two-Dimensional Ultrasound Transducer Array for Acoustic Radiation Force Impulse Imaging
Submission Author:
Djalma Santos , SP
Co-Authors:
Djalma Santos, Fernando Cardoso, Sergio Furuie
Presenter: Djalma Santos
doi://10.26678/ABCM.COBEM2017.COB17-0592
Abstract
Acoustic radiation force impulse (ARFI) imaging is a medical modality that uses a focused ultrasound transducer to generate acoustic radiation force in soft tissues. This is a very promising method because it enables to quantitatively assess mechanical properties of soft tissues. The aim of this work is to design a 2D ultrasound transducer array for ARFI excitation with high efficiency. We proposed a transducer array configuration that is capable of reducing: 1) the number of channels of the ultrasound system; and 2) the large electrical impedance mismatch between the transducer and the voltage source circuitry. The performance of the fabricated transducer was compared to a typical transducer and the results showed a high power transfer efficiency, broad bandwidth and minimum insertion loss, determining optimum parameters for the design of 2D ultrasound transducer arrays used in ARFI imaging.
Keywords
2D array, Ultrasound, transducer, ARFI imaging, elastography
