This study aims at showing the feasibility of MR-embedded respiratory motion tracking in ZTE lung imaging. It was shown that the motion information in a moving phantom as well as in free-breathing human volunteers and patients could be extracted from the off-center k-space data sampled during a ZTE acquisition with a faithful accuracy and precision in time and in amplitude with respect to a respiratory belt measurement. This new intrinsic motion follow-up method could be useful for retrospective motion correction of simultaneously acquired PET/MR images.
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