| 摘要 |
The present disclosure provides systems and methods for ultrasound imaging using a modified variable sampling beamforming technique. Unlike conventional methods of variable sampling beamforming, in which in-phase and quadrature samples are obtained for each pixel location, in various example embodiments of the present disclosure, the pixel locations are quadrature-spaced such that for each 5 sample point, an adjacent sample point along an A-line is employed as the quadrature sample. The samples at each array element may be triggered according to the time of flight between a first pixel location and the location of the array element, such that successive samples, corresponding to successive pixel locations along the selected A-line, are obtained such that adjacent samples are spaced by a 10 time interval corresponding to a quarter of an odd number of wavelengths of the beamformed transmit pulse, and such that only one sample is acquired per pixel. |
