Abstract #2353

Realtime dynamic xyz-shimming in the cervical spinal cord

Daniel Papp¹, Alexandre D’Astous¹, Julien Cohen-Adad^1,2,3, and Eva Alonso-Ortiz⁴

¹NeuroPoly Lab, Institute of Biomedical Engineering, Polytechnique Montreal, Montreal, QC, Canada, ²Mila - Quebec AI Institute, Montreal, Montreal, QC, Canada, ³Functional Neuroimaging Unit, Centre de recherche de l'Institut universitaire de gériatrie de Montréal, Montreal, QC, Canada, ⁴NeuroPoly Lab, Department of Electrical Engineering, Polytechnique Montreal, Montreal, QC, Canada

Synopsis

Respiration-induced changes of the magnetic field are an important source of image artefacts in spinal cord MRI. Here, we introduce realtime dynamic xyz-shimming to fully compensate for these distortions in a time-varying (‘realtime”), slicewise (‘dynamic”) fashion, using both in-plane (‘xy’) and through-plane (‘z’) gradients (‘xyz-shimming’).

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