METHOD AND APPARATUS FOR GENERATING FOCUSED ULTRASONIC WAVES WITH SURFACE MODULATION

摘要

The invention relates to a method for generating ultrasonic waves focused on a focusing zone (5) in order to carry out biological lesions, comprising the activation of a plurality of ultrasonic transducer elements (3). According to the invention: - a target zone, in which homogenization of the supply of energy of the ultrasonic waves emitted by the ultrasonic transducer elements is desired, is chosen, - the focusing effect and the acoustic attenuations of the ultrasonic waves on their path between the target zone and the ultrasonic transducer elements (3) are determined, - the focusing effect and the acoustic attenuations of the ultrasonic waves are compensated, with ultrasonic transducer elements (3) at least some of which have non-identical emission surfaces such that in the target zone the supply of energy of the ultrasonic waves emitted by the different ultrasonic transducer elements (3) is more or less identical.