Abstract #1721
Gross structure of magnetic field inhomogeneity in the human cervical spinal cord
Paul Summers 1 , Armando Bauleo 2 , Stefania Favilla 2 , Fabiola Cretti 2,3 , Fausta Lui 2 , and Carlo A Porro 2
1
UniMoRE / IEO / Policlinico Milan, Modena,
MO, Italy,
2
University
of Modena and Reggio Emilia, Modena, Italy,
3
Ospedali
Riuniti di Bergamo, Bergamo, Italy
We have measured the magnetic field (B0) in the human
cervical spinal cord. We observed a large-scale B0
variation of 150-300Hz difference between the brain and
mid-cervical spine, with a partial recovery in the lower
spinal cord. Superposed on this large-scale feature were
smaller oscillations in B0 having spatial intervals
consistent with the lengths of the corresponding
vertebral bodies. In contrast to prior studies, we found
minimal difference in the temporal variation in B0 along
the length of the cervical spine. The observed
inhomogeneity profile provides a context for
understanding the difficulties of shimming in the
cervical spine.
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