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. Author manuscript; available in PMC: 2014 Feb 1.
Published in final edited form as: IEEE Trans Med Imaging. 2012 Oct 4;32(2):247–261. doi: 10.1109/TMI.2012.2222656

Fig. 13.

Fig. 13

Phase velocity variation for 8 frequencies between 50–400 Hz by taking median through wall thickness from one animal. The error bars are the standard deviations from five consecutive acquisitions. (a) 50 Hz, (b) 100 Hz, (c) 150 Hz, (d) 200 Hz, (e) 250 Hz, (f) 300 Hz, (g) 350 Hz, (h) 400 Hz, (i) – (j) ECG trace for synchronization purposes.