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We have recently validated the use of a second-order Volterra (SoVF) model for separating the linear and quadratic components of the beamformed radio frequency (RF) data in pulse-echo ultrasonic imaging. The quadratic component captures the second order nonlinearities in the echo data. Grayscale images from the quadratic component, referred to as quadratic B-mode (QB-mode) images, typically have higher...
We have previously introduced a k-space based 2D post-beamforming filter for restoring image contrast loss due to coarse sampling of the imaging apertures. The 2D regularized imaging operator was obtained and implemented on full frame data in k-space using computationally-efficient 2D fast Fourier transform (FFT). The computational efficiency of the 2D filter can be further improved by implementing...
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