Abstract
A dual-mode high-power ultrasound phased array with imaging capability to allow for self-guidance in noninvasive thermal surgery is described. Criteria governing the design of such dual-mode arrays to allofor high therapeutic efficiency and adequate image contrast in the target volume are given. Experimental results for characterization of the array in both the imaging and therapy modes are given. Having established the dual-mode capabilities of this array, we have recently conducted a series of experiments in forming discrete and volumetric lesions in freshly excised tissue samples. Experimental results demonstrating the feasibility of visualizing the lesion formation process are presented. Images formed before and after discrete lesion formation have consistently shown increased level of echogenicity at the lesion location. Similar results were obtained for volumetric lesions. These results show that the spatial mapping of the lesion size and shape based ultrasound images obtained using the therapeutic array is feasible.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 30-40 |
| Number of pages | 11 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 4247 |
| DOIs | |
| State | Published - Jan 1 2001 |
| Event | Thermal Treatment of Tissue: Energy Delivery and Assessment - San Jose, CA, United States Duration: Jan 21 2001 → Jan 22 2001 |
Keywords
- Ablation
- Harmonic imaging
- Image compounding
- Imaging
- Thermal surgery