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Sensitivity roll-off of different processing methods: (a) NUDFT on 100% data; (b) FFT-CS; (c) MNUDFT-CS; (d) NUFFT-CS with Gaussian kernel (R=2, W=5); (e) NUFFT-CS with KB kernel (R=2, W=5); (f) NUFFT-CS with KB kernel (R=1.5, W=3). (g) comparison of PSFs at a certain image depth using different processing methods; (h) maximum amplitude of PSFs using different processing methods; (i) SNR versus image depth for different processing methods.
