SHARP NMR biomedical spatial localization.

An application of the Slepian-Pollak-Landau "time and band limited functions" is found in NMR imaging. The precise context is best described by the rotating-frame dynamics of the Bloch equations, where an analogy is made to the problem of simultaneously concentrating a function in time and frequency. The appropriately modulated rf fields are found to yield excellent response characteristics when used in numerical simulations of the Bloch equations.