Prospective motion correction inherently does not provide uncorrected images. Thus, for image assessment usually motion corrected and uncorrected data from two different scans – therefore with different motion patterns – are qualitatively compared. In this study, prospectively corrected data from a highly trained cohort is retrospectively decorrected to enable a quantitative assessment with image-based and segmentation-based metrics. The results indicate that for the observed small-scale, involuntary subject motion quantitative rather than qualitative assessment is necessary to estimate the image degradation.
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