Abstract

TRONCO GASPARINI, Reynaldo  and  DA SILVEIRA NANTES BUTTON, Vera Lúcia. DEVELOPMENT OF A MATLAB ENVIRONMENT SOFTWARE FOR SIMULATION OF ULTRASONIC FIELD. Rev. ing. biomed. [online]. 2013, vol.7, n.13, pp.57-67. ISSN 1909-9762.

The study of the acoustic field generated by an ultrasonic transducer is fundamental to its construction and characterization, because it defines how it will behave before being built. It also defines whether it is feasible or not, for the application to which it was designed. It can also lead to modifications to the project so it behaves as expected. In this work, a software was implemented in MATLAB^®, for computational simulation of acoustic fields generated by ultrasonic transducers of different configurations. Two models were used, Zemanek and Stepanishen. Transducers with focus and apodization and transmission medium with attenuation may also be simulated. For the simulation of Zemanek's model, the mathematical method of discretization was used. The Stepanishen's model used an analytical solution for the impulse response. The developed programs were aggregated into a computer package, named FSIM, and a graphic interface was created. The user can choose among some of the transducer configurations and simulation parameters already implemented. FSIM has a modular architecture and allows further simulation modules to be added. The simulations were validated comparing results to those previously published in classical papers from Zemanek, and from Lockwood and Willete, in addition to prior results from research studies conducted at the Biomedical Engineering Department of the School of Electrical and Computing Engineering at the Universidade Estadual de Campinas (UNICAMP).

Keywords : Acoustic Field Simulation; Discrete Representation; Impulse Response; MATLAB; Ultrasound Transducers.

        · abstract in Spanish     · text in English     · English ( pdf )