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. Author manuscript; available in PMC: 2013 Feb 1.
Published in final edited form as: Ultrasound Med Biol. 2011 Dec 16;38(2):296–311. doi: 10.1016/j.ultrasmedbio.2011.10.026

Figure 4.

Figure 4

Figure 4

Two push beam schemes: (a) normal focusing (b) axicon focusing.