Abstract:
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.
Abstract:
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.
Abstract:
A combined imaging/HIFU probe (10) includes an imaging scan head (12), a HIFU transducer (16), and an outlet port (20) that delivers a flow of fluid across the HIFU transducer. At least a portion of the body cavity is filled with fluid in which the probe is- immersed. The fluid provides a coupling for transmission of ultrasound energy between the probe and the patient. A flow of fluid may also be used to flush obstructions from an area of tissue near the HIFU transducer. Further described herein is a cuff (60) to help retain fluid in the body cavity, a regulator (64) to regulate fluid flow with respect to the body cavity according to a desired fluid pressure, and a cover (180) for the HIFU transducer that has at least one perforation defined therethrough to allow fluid to flow through the cover. Further disclosed herein are methods of deploying a combined imaging/HIFU probe in a body cavity.