Efficient Energy Delivery for Image-Guided HIFU with Phased Arrays

Ke Li1, Xiang Ji1, Jingfeng Bai1, Yazhu Chen2

  • 1Shanghai Jiao Tong University
  • 2Shanghai Jiaotong University

Details

Category

Minisymposia (Oral) [1-page]

Sessions

08:00 - 08:45 | Wed 12 Jul | Cho Room | WeAT2

Recent Advances on Image-Guided Devices and Therapies

Abstract

Efficient energy delivery is increasingly required for clinical HIFU ablation. One typical such approach is volumetric ablation, in which the target volume is divided into different concentric circles (also referred to treatment cells). The focal spots spread uniformly on the circles and each focus is sonicated with the same short time interval. The single-focus and dual-focus patterns were considered to ablate treatment cells with different sizes in simulations. Results show that dual-focus pattern is more suitable for small treatment cells (e.g., 4 mm), while the single-focus pattern is superior for larger cells. Compared with the single-focus pattern, the combination of both patterns can decrease sonication time for volumetric ablation.

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