Fig. 7.

a,b) PSD for non-denoised data, ${\widehat{\text{PSD}}}^{\mathbf{Y}}$, and the different denoising alternatives, ${\widehat{\text{PSD}}}^{{\mathbf{X}}_{\text{RG}}}$ (regridded), ${\widehat{\text{PSD}}}^{{\mathbf{X}}_{\text{ZF}}}$ (zero-filled) and ${\widehat{\text{PSD}}}^{{\mathbf{X}}_{\text{RA}}}$ (ramped), along the a) readout and b) PE directions. c-f) Resulting images c) before denoising, and when denoising using the d) regridded ($\hat{\gamma }=0.65$), e) zero-filled ($\hat{\gamma }=0.85$) and f) ramped ($\hat{\gamma }=0.9$) approaches.