Patent ID: 8038616
Filing Date: 2011-10-18
Classification: A61B,G01S

Abstract:
1. A method for measurement or imaging of at least one of acoustic scattering and propagation properties in a region of an object, the method comprises: a) transmitting at least one acoustic pulse complex in beams towards the region of the object, the at least one acoustic pulse complex including at least one acoustic high frequency (HF) pulse and at least one acoustic low frequency (LF) pulse with the same or overlapping beam directions; b) receiving HF receive signals with a HF transducer array from at least one of acoustic waves produced by object scattering of the at least one HF pulse, and acoustic waves of the at least one HF pulse that have propagated through the object; and c) forming measurement or image signals from the HF receive signals, wherein the step of forming comprises using the at least one LF pulse to produce a nonlinear manipulation of elastic properties of the region of the object observed by the at least one HF pulse to suppress the deteriorating effect on the measurement or image signals of pulse reverberation noise from multiple scattering of the at least one HF pulse.