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 Hynynen^1,2,3

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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