Unlike conventional contrast-weighted imaging, quantitative MR parametric maps can be obtained from MRF and should conceivably be very useful for the quantification and delineation of normal and pathologic tissues. Together with the fact that MRF is very efficient , our central hypothesis is that MRF is an ideal alternative to existing MRI motion tracking methods. In this study, we have demonstrated that it is possible to track motion by continuously performing MRF during free breathing. MR parametric maps for each respiratory phases were retrospectively estimated from the MRF snapshots that fall into a given respiratory bin.
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