- This project proposed electronic beam steering, multi-focal patterns, and sector vortex beamforming approaches in conjunction with partial array activation.
- Turning off a percentage of the outer array to increase the f-number increased the focal size with a decrease in focal gain.
- Sonications with the vortex mode number 4 provided the focused pressure fields around the axis of the beam and the heated volume was enlarged, for higher mode numbers and for lower number of active elements.
- We developed an acoustic and thermal simulation framework to calculate the 3D acoustic intensity and temperature distribution resulting from the proposed beamforming and scanning strategies.
- This project demonstrated the feasibility of large volume hyperthermia beam patterns using the ExAblate body system.
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