Acoustic-Pulser Feedback and Power Factor Control of a HIFU Device

摘要

A method and system for adjusting a HIFU device compensates for shifts in transducer impedance so that the acoustic output from a HIFU transducer remains at a desired level. In accordance with a first aspect, the disclosure includes dynamically adjusting the tuning of a tuning network that causes the transducer/system to maintain an optimal power transfer to the acoustic output. In accordance with a second aspect, the disclosure monitors the acoustic output of the HIFU device and adjusts the electrical signal provided to the HIFU transducer to maintain a desired acoustic output.

主权项

1. A method of controlling an acoustic output from a HIFU transducer, comprising:
providing an electronic signal to a HIFU transducer to cause the HIFU transducer to output a waveform having acoustic energy; sensing the acoustic energy of the waveform using one or more receive transducers positioned with respect to an acoustic field of the HIFU transducer; comparing the sensed acoustic energy of the waveform to an expected value that is correlated with an intended acoustic energy; and adjusting a control of the electronic signal to cause the HIFU transducer to output a waveform having the intended acoustic energy.