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Abstract #1822

Combined motion and B0 correction of susceptibility weighted imaging with jointly acquired FID and spherical navigators

Miriam Hewlett1,2, Junmin Liu2, and Maria Drangova1,2
1Medical Biophysics, Western University, London, ON, Canada, 2Robarts Research Institute, London, ON, Canada

Synopsis

Keywords: Motion Correction, Motion CorrectionJointly acquired FID and spherical navigators were applied for prospective correction of motion and retrospective correction of zeroth order field offsets in a susceptibility weighted imaging protocol. Initial results showed a significant reduction in motion artifacts with prospective motion correction, quantified using structural similarity index. Retrospective B0 correction provided an additional improvement in image quality (also statistically significant). Future work will investigate methods to reduce residual artifacts, as well as incorporating the navigator within deadtime in the sequence to reduce scan time.

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