A Mildly Invasive, Ultrasound-based, Approach for Stroke Disruption

Z. Hajri, M. Boukadoum, H. Hamam, and R. Fontaine (Canada)


ultrasound, guided propagation, stroke disruption, cavitation.


This paper investigates a new mildly invasive therapeutic method to disrupt strokes. The method is based on the propagation of ultrasound waves inside a carotid artery, viewed as a circular waveguide. At 1 MHz ultrasound frequency, the penetration depth is about 21.7 cm, which is sufficient to reach and dissolve cerebral clots, and the temperature rise rate is about 0.46 C/s for an intensity of 100 W cm-2 . Four propagation modes can be used. Pulsed waves are used to enhance cavitation, which is considered as the most likely and dominant mechanism for blood clots disruption.

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