Figure 15
Dynamic changes of Δ β in ex vivo porcine muscle tissue during slow HIFU treatment. Δβ values were estimated by spatially averaging the Δβ values axially and laterally in the region of interest (20 mm × 34 mm) centered around the lesion generated by HIFU as shown in Figure 14. The duty cycle was 77%, with TAP of 5 W, resulting in an average focal intensity of 117 W/cm2 at the HIFU treatment site, for a total HIFU treatment time of 9 min and 39 s.