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Abstract #5435

A fully electronically steered phased array with 4096 elements for ultrasound treatments under MRI guidance

Yuexi Huang1, Ben Lucht1, Rohan Ramdoyal1, Samuel Guneseelan1, Tyler Portelli1, Ping Wu1, and Kullervo Hynynen1,2,3

1Physical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada, 2Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada, 3Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada

A flat focused ultrasound array of 13 cm in diameter with 4096 elements was manufactured in house with center-to-center element spacing of half-wavelength at the centre frequency of approximately 500 kHz. The design allows for a much wider steering range. Feasibility for thermal ablation and hyperthermia over large target volumes was demonstrated in animal studies.

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