Fig. 10: Effects of choosing different regularization factors λ on the LASSO-based PI-SSFP data processing.

This is exemplified on the {1H}15 N NMR data introduced in Fig. 9. Notice that, in accordance to the literature^33,34, the effect is largely cosmetic: frequency elements devoid of influence are progressively suppressed until becoming null, while spectral elements containing meaningful information (i.e., the peaks) remain mostly untouched in both amplitude and spread (line width). Blue traces are zoomed regions from the indicated peaks; empty regions were cropped away for clarity.