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Abstract #2647

Retrospective affine motion correction of arterial spin labeling kidney perfusion measurements

Steffen Ringgaard1 and Anne Dorte Blankholm2
1MR Research Centre, Aarhus University, Aarhus, Denmark, 2Department of Radiology, Aarhus University Hospital, Aarhus, Denmark

When doing arterial spin labeling perfusion measurements in the kidneys, respiratory motion is an important issue. We compared different methods for doing retrospective motion correction of single-shot ASL images. We evaluated the temporal signal variation in the cortex after correction by translation, translation+rotation and affine transformation and found that the variation was lowest when using full affine correction. Besides, we also compared different similarity measures as used during the motion correction.

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