Abstract: Processing equipment by pressure waves includes a chassis supporting a pressure-wave generator. According to the invention, the processing equipment includes an actuation system including a fixed part mounted on the chassis and a mobile part in translation according to a direction substantially perpendicular to an axis of oscillation of a curved section of an imaging system, a linking system with the curved section, connected to the mobile part in translation of the actuation system, and a control unit of the actuation system for placing the linking system in at least two stable positions corresponding to two different positions of incidence of the curved section of the imaging system.