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. Author manuscript; available in PMC: 2007 May 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2007 Feb;54(2):301–312. doi: 10.1109/tuffc.2007.244

Fig. 9.

Fig. 9

The temperature increase in tissue with an absorption of 0.7 dB/cm/MHz is compared for conventional and parallel tracking techniques. The color bar at the top of each column indicates the temperature increase in degrees Celsius. The top row of images show heating associated with conventional tracking and the bottom row shows the heating associated with 4:1 parallel tracking. The temperature change is shown for (a) a single frame, (b) 5 consecutive frames at the same frame rate (2.8 fps), and (c) 2.16 seconds at each mode’s maximum frame rate.