On-line holographic reconstruction of NMR images by means of a liquid crystal spatial light modulator

A method of holographic reconstruction of nuclear magnetic resonance (NMR) images by making a hologram directly from the NMR signal is described. Since the signal obtained in NMR Fresnel transform technique is given by an equation similar to that of the Fresnel diffraction equation in light, it is possible to reconstruct NMR images by recording the NMR signal as a hologram and using a coherent optical system. We propose a new image reconstruction technique using a liquid crystal spatial light modulator for displaying holograms in a coherent optical system, which would realize a real-time reconstruction of NMR images. In the experiment, it is shown that good images were obtained by electrically displayed hologram.