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Abstract #3928

More than meets the eye: Quantitative evaluation of prospective motion correction at 7T

Hendrik Mattern1, Falk Lüsebrink1, Alessandro Sciarra1, and Oliver Speck1,2,3,4

1BMMR, Otto-von-Guericke-University, Magdeburg, Germany, 2German Center for Neurodegenerative Disease, Magdeburg, Germany, 3Center for Behavioral Brain Sciences, Magdeburg, Germany, 4Leibniz Institute for Neurobiology, Magdeburg, Germany

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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