Respiratory motion is a significant problem in MRI and is further amplified in abdominal imaging. Traditional methods to correct for motion in abdominal DWI significantly increase overall scan time. In this work, motion vectors derived from non-rigid registration of low b-value diffusion volumes are used to correct for motion in higher b-values, where low signal to noise and contrast make intra and inter b-value registration challenging. Initial results suggest the proposed method can produce images similar in quality to respiratory gating, while maintaining reduced acquisition times.
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