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B-scans of a mouse paw. (a) original image obtained by applying NUDFT to 100% of the acquired non-linear wavenumber spectra; (b) CS reconstruction result with the NUDFT matrix from 40% of the acquired non-linear wavenumber spectra; (c) CS reconstruction result with the MNUDFT matrix from 40% of the acquired non-linear wavenumber spectra; The scale bars represent 100μm. Image size in pixel is 450 × 1000
