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. Author manuscript; available in PMC: 2014 Sep 22.

Published in final edited form as: Phys Med Biol. 2013 Sep 4;58(18):6541–6563. doi: 10.1088/0031-9155/58/18/6541

Relationship between loss of echogenicity and (a) subharmonic emissions, and (b) broadband emissions from ELIP insonified by Doppler pulses of duration 1.66 μs. The open squares represent the experimental data. The x and y error bars represent the standard deviation of four measurements. The dotted line represents an exponential fit. The insets show the onscreen echogenicity of ELIP flowing through the Doppler focus and the corresponding percent loss of echogenicity.

Relationship between loss of echogenicity and (a) subharmonic emissions, and (b) broadband emissions from ELIP insonified by Doppler pulses of duration 1.66 μs. The open squares represent the experimental data. The x and y error bars represent the standard deviation of four measurements. The dotted line represents an exponential fit. The insets show the onscreen echogenicity of ELIP flowing through the Doppler focus and the corresponding percent loss of echogenicity.