2127results about "Ultrasonic/sonic/infrasonic device control" patented technology

Beamforming method that allows a high speed and high accuracy beamforming with no approximate interpolations. This beamforming method includes step (a) that generates reception signals by receiving waves arrival from a measurement object; and step (b) that performs a beamforming with respect to the reception signals generated by step (a); and step (b) including without performing wavenumber matching including approximate interpolation processings with respect to the reception signals, and the reception signals are Fourier's transformed in the axial direction and the calculated Fourier's transform is multiplied to a complex exponential function expressed using a wavenumber of the wave and a carrier frequency to perform wavenumber matching in the lateral direction and further, the product is Fourier's transformed in the lateral direction and the calculated result is multiplied to a complex exponential function, from which an effect of the lateral wavenumber matching is removed, to perform wavenumber matching in the axial direction, by which an image signal is generated.

In the event that images are acquired for multiple cross-sections (multiple phases) by a predetermined imaging mode in an examination under stress to a subject, images of the same phase acquired by the same imaging mode in an examination before stress to the subject is read and simultaneously displayed as reference images together with current images. The operator can bring the cross-sectional position in the examination under stress in correspondence to the position of the examination before stress by comparing the displayed reference images with the current image.