Abstract
Nuclear magnetic resonance (NMR) plays an important role in the fields of physics, chemistry, biology and medicine. The homogeneity of the magnetic field is very significant for NMR experiment. Based on the principle of field mapping, gradient shimming is an efficient method to achieve a homogeneous magnetic field. Reflecting accurately the spatial magnetic field distribution produced by every shim coil, gradient shimming can optimize the homogeneity efficiently and quickly. In this paper, one-dimensional gradient shimming method was studied, and the corresponding computational process was improved. Experiments were done on the NMR spectrometer, and the results show that the improved algorithm operates more efficiently and still works in a great inhomogeneous magnetic field.
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