a therapy system comprises a therapy module to perform successive deposits of energy in a target zone , the therapy system being provided with a control module is configured to prior the deposits of energy produce an a priori estimate of the induced heating . for example a thermometry module is provided to measure temperature in a measurement field . the induced heating may be derived on the basis of a tissue model from the settings of the therapy module . in particular the therapy module is a high - intensity focuses ultrasound transmitter . a magnetic resonance examination system configured for thermometry is employed as the thermometry module .