Patent ID: 8922554
Filing Date: 2014-12-30
Classification: G01S

Abstract:
1. A method for three-dimensional reconstruction from an irregular ultrasound sampling grid, the method comprising: acquiring ultrasound data representing sample locations in first and second azimuth-range planes associated with scanning from different apertures along a linear array twisted about a longitudinal axis of the linear array such that the sample locations of the first plane are offset in azimuth from the sample locations of the second plane by a non-integer amount of scan line spacing; determining a grid voxel of a three-dimensional grid, the grid voxel between the first and second planes; bilinearly interpolating, by a graphics processing unit, a first sample in the first plane from data of the sample locations of the first plane; bilinearly interpolating, by the graphic processing unit, a second sample in the second plane from data of the sample locations of the second plane; linearly interpolating a voxel value for the grid voxel from the first and second samples; and rendering an image from the three-dimensional grid, the image being a function of the voxel value; wherein the bilinearly interpolating of the first sample comprises interpolating the first sample to a first position on the first plane, the first position in the first plane being closest to the grid voxel, relative distances from the sample locations of the first plane to the first position weighting the interpolating of the first sample; and wherein the bilinearly interpolating of the second sample comprises interpolating the second sample to a second position on the second plane, the second position in the second plane being closest to the grid voxel, relative distances from the sample locations of the second plane to the second position weighting the interpolating of the second sample.