Keywords: Head & Neck/ENT, Susceptibility
Motivation: The precise mechanisms through which pigeons detect and utilize the Earth’s magnetic field for orientation and navigation remain to be fully explored. The χ-separation, which is capable of disentangling the sub-voxel contributions of paramagnetic and diamagnetic susceptibility, is utilized to provide novel insights into this physiological processes.
Goal(s): To investigate the distribution of paramagnetic and diamagnetic susceptibility in the pigeon head using the χ-separation technique.
Approach: Ex vivo pigeon head was scanned at 14.1T MRI with 100 µm isotropic resolution.
Results: The results demonstrate that the χ-separation technique can provide previously unseen information on the distribution of paramagnetic and diamagnetic susceptibility.
Impact: The distribution of paramagnetic and diamagnetic susceptibility disentangled by χ-separation could provide new insights into the understanding of the mechanisms by which pigeons sense and use the Earth’s magnetic field for orientation and navigation.
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