Figure 10.

Photographs of lesions created by the SonoKnife prototype inside gel phantoms. The sonications were for 20 s for an acoustic power of 120 W (no scanning). The line-focus was positioned approximately at 1.5 cm under the phantom surface. Results for two different phantoms are shown, one was cubical (a, c, e) and one cylindrical (b, d, f). (a) and (b) are beam’s eye view photographs (line-of-sight along the z direction). In (c) and (d) the line-of-sight was along the y direction, showing the projected thickness of the lesion across the acoustic edge. In (e) and (f) the line-of-sight was along the x direction, showing the projected length of the lesion along the acoustic edge.