Figure 7.
Plot of absolute T1 after high thermal dose. a–b: Temperature and T1 maps of the focal zone for experiment 3 run 1. The black rectangle represents the ROI used to plot figure c and d. The ROI was chosen in region where no voxel were heated to boiling temperature. c: Plot of T1 versus the absolute temperature of 4 voxels at the focus. A series of five heating and cooling runs were performed at the acoustic powers: 27 watts, 39 watts, 39 watts, 39 watts, 39 watts. d: Plot of the corresponding thermal dose versus time of the 4 voxels centered at the focus.