Patent ID: 10792518

Abstract:
A passive cavitation mapping method is provided that includes capturing a channel signal from at least one ultrasound transducer in an array of ultrasound transducers, isolating a cavitation signal in the channel signal, time-gating the channel signal about the cavitation signal, computing a time-delay between neighboring the cavitation signals in adjacent the channel signals, computing a modified parabolic fit to the square of the arrival times, where the modified parabolic fit includes a coordinate transformation using an x location of a leading edge of wavefronts of the cavitation signal and a maximum arrival time of the cavitation signal, extracting a location of a cavitation signal source at point (x, z) in the coordinate transformation, computing a cavitation magnitude for each non-eliminated cavitation signal, creating a passive cavitation map by convolving the cavitation magnitude and the source location with an uncertainty function, and using the cavitation map for therapeutic ultrasound applications.