Transmit-receive dynamic focusing with limited diffraction beams

A two-way Fourier imaging method has been developed with limited diffraction beams. Resolution and sidelobes of 2D and 3D images constructed with the method are similar to those obtained with a conventional two-way dynamic focusing system if a cosine aperture apodization is applied. No delay and image montage are required for the new method and thus imaging systems will be greatly simplified.