Ultrasonic diagnosis image conversion of non-linear characteristic cross modulation component and harmonic component

摘要

The ultrasonic diagnostic image conversion system and the method of being disclosed the harmonic component and the cross modulation product (sum frequency or difference frequency) execute the non-linear characteristic echo signal image conversion which uses the component. The point which causes the both of harmonic and the cross modulation product, with the non-linear characteristic effect of organization or the contrast medium, is separated from the basic propagation component of the echo signal by pulse reversal process is profitable. It is possible, to improve the signal-noise ratio of the ultrasonic picture by using the both non-linear characteristic component, the component of 2 types, in order to offset the influence of depth dependant attenuation, is mixed in the territory where the picture differs, is used.