A device (1) for therapeutic treatment comprising the following components:A HIFU transducer (2) operable in at least a probing mode during a probing phase and in a treatment mode during a treatment phasea detector (6) designed to detect a change of tissue properties caused by said HIFU pulses (3) in the target (4) during said probing phasecalculating means (7) such as a computer or a microprocessor for determining at least one probing parameter necessary to achieve said change of tissue properties detected by the detector (6) during the probing phasea control (8) for defining said treatment parameters on the basis of said probing parameters is providedthe control (8) being designed to change the operation characteristics from the probing phase to the treatment phase by increasing an area on the target (4) of at least one pulse (3) impinged by said HIFU pulse (3) during the treatment phase.
