A method for measuring a non-linear response of the tissue and the bubbles by means of an ultrasonic imaging system

摘要

a figure with high sensitivity to nonlinear responses and, in particular, to answer the second harmonic is by measuring the ultraschallantwort in several erregungspegeln are achieved.the replies from the various erregungspegeln collected, amplification, corrected, and a lot of the difference of the erregungspegel corresponds to what you be subtracted. because of this subtraction, the greatest part of linear response, and the rest of the nonlinear response.