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Abstract:
Introduction: Amplified MRI (aMRI) is a novel signal processing technique that uses motion amplification algorithms to reveal (sub)- voxel movement of the imaged tissue. Data from time-resolved bSSFP cine imaging sequences in combination with cardiac gating is used as raw data for the algorithm to amplify. Banding artefacts are a known issue in bSSFP sequences resulting from B0 inhomogeneity, aggravating at higher field strengths. In recent studies, initially imperceptible motions of the brain have been visualised with great success using aMRI at 3 T systems 1,2,3 . The higher spatial resolution available at 7 T systems would provide an interesting opportunity to visualise brain movement using aMRI in even greater detail. To the authors’ best knowledge, no instance of aMRI performed at 7 T systems has been reported yet. In this study, we aim to utilise 7 T- aMRI, compare the results to 3 T-aMRI, and determine whether the increased banding artefacts pose too much of a hindrance to prefer 7 T over 3 T.
