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Wideband MRI, a novel technique that utilized expanded bandwidth with several carriers, has been demonstrated to increase the throughput of MR imaging. Various MR imaging methods, especially those that require large coverage, have successfully take advantage of Wideband MRI and obtain speedup as high as to 8X. The fundamental physics of Wideband MRI was inspected from basic equations derived in this paper, not only evaluating the pros and cons, but also providing guidelines for designs. Two possible Wideband MRI applications are completed in this study. One is to accelerate the total scan time of a whole body study, and the other to obtain images with finer detailed information without consuming excessive time. In either experiment, Wideband MRI proves itself to be a powerful tool for the evolution of MR imaging and biomedical imaging as well.