Method for controlling histotripsy using confocal fundamental and harmonic superposition combined with hundred-microsecond ultrasound pulses

A method for controlling a histotripsy using a confocal fundamental and harmonic superposition combined with hundred-microsecond ultrasound pulses, including: 1) positioning a target tissue by a monitoring and guiding system and adjusting a position of the target tissue to a focal point of a transdu...

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Hauptverfasser: Lu, Mingzhu, Li, Ruixin, Han, Dan, Li, Yujiao, Geng, Yizhe, Liu, Yanshan, Wang, Rui, Wang, Xuan, Liu, Yehui, Wan, Mingxi
Format: Patent
Sprache:eng
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Zusammenfassung:A method for controlling a histotripsy using a confocal fundamental and harmonic superposition combined with hundred-microsecond ultrasound pulses, including: 1) positioning a target tissue by a monitoring and guiding system and adjusting a position of the target tissue to a focal point of a transducer; 2) first stage: controlling the confocal fundamental and harmonic superposition combined with hundred-microsecond ultrasound pulses to form a shock wave in a focal zone; wherein a negative acoustic pressure exceeds a cavitation threshold; an inertial cavitation occurs to generate boiling bubbles; the boiling bubbles collapse and achieve partial homogenization of the target tissue; 3) second stage: controlling the confocal fundamental and harmonic superposition combined with hundred-microsecond pulsed-ultrasound sequences to simultaneously irradiate a target zone and further mechanically disintegrate and homogenize the target tissue.