Method For Ultrafast Compound Plane Wave Imaging Based On Broadband Acoustic Metamaterial

A method for ultrafast compound plane wave imaging based on broadband acoustic metamaterial, wherein

• the method for ultrafast compound plane wave imaging is implemented by an apparatus for ultrafast compound plane wave imaging;
• the apparatus for ultrafast compound plane wave imaging comprises a transmit-receive ultrasonic probe and an acoustic metamaterial structure;
• an ultrasonic signal emitted by the transmit-receive ultrasonic probe arrives at a measured object after passing through the acoustic metamaterial structure;
• and the transmit-receive ultrasonic probe further receives echo signals reflected by the measured object;
• the method for ultrafast compound plane wave imaging specifically comprises:
• controlling the transmit-receive ultrasonic probe to emit an ultrasonic signal at a preset transmit frequency and a first preset transmit angle, wherein the ultrasonic signal arrives at the measured object after passing through the acoustic metamaterial structure, and the preset transmit frequency is equal to a response frequency of the acoustic metamaterial structure;
• controlling the transmit-receive ultrasonic probe to receive, at a preset receive frequency and separately at a first preset receive angle, a second preset receive angle, and a third preset receive angle, the echo signals reflected by the measured object, wherein the preset receive frequency is n times the preset transmits frequency, and n>1;
• and the first preset receive angle is equal to the first preset transmit angle, the second preset receive angle is smaller than the first preset transmit angle, and the third preset receive angle is larger than the first preset transmit angle;
• and
• using the echo signals to reconstruct an image of the measured object.