ULTRASOUND IMAGING DEVICE AND ULTRASOUND IMAGING METHOD

摘要

Provided is a technique which, in ultrasound imaging using THI amplitude modulation, can obtain high-quality images by extracting with high accuracy only the non-linear component. The effect of electric distortion caused by analogue amplification on the echo signal of ultrasound of different sound pressure levels is made approximately equivalent, the fundamental wave component is removed with high accuracy and only the non-linear component is extracted with high accuracy. The aforementioned effect can be made equivalent by controlling the gain of the amplifier unit, for example. The effect can also be made equivalent by repairing digital data by means of a filter.