Figure 3

Superposition of temperatures. Three orthogonal views of superpositions of temperatures for the 29 sonications in the phantom study (a) and the 32 sonications in the lamb study (b). In both (a) and (b), the temperature maps are overlayed on magnitude images. Heatings in the right hemisphere in (a) are mirrored from the left hemisphere (see Figure 1). In both the phantom and the lamb studies, the focal spots are only slightly aberrated, in agreement with the hydrophone results in Figure 2. The near-field heating is more severe in the lamb study than in the phantom study. In (a) and (b), the three views are color coded, with the colored frame and arrows indicating each view’s position in the other two views.