LAURA ONOSE*,** , LUMINIŢA MORARU** , MARIANA CARMEN NICOLAE*,***
* Metallurgical High School Galaţi
**”Dunărea de Jos” University of Galaţi, Faculty of Sciences, Physics Department
**“Buna Vestire” Hospital, Galaţi, Romania
Abstract: Field II program, developed by Jørgen Arendt Jensen, can simulate all kinds of ultrasound transducers. With this program it is possible to control dynamically the focusing and apodization of the transducers which makes it possible to simulate various types of ultrasound imaging systems. The simulation method can be used for optimization of array parameters in the design stage and also for education and research purposes. In intravascular sonography or low depth imaging the desired tissue is very close to the transducer therefore it is useful to apply this method of good accuracy both in near-field and far-field. In this paper the authors make a presentation of this program giving examples of transducers simulation and they have introduced an improved simulation method for calculating the ultrasound field of arrays. Simulation results are shown for different parameter settings to evaluate the effects of every parameter in the 2-D arrays field.
Key words: acoustic field, simulation, ultrasound transducers, tissue.