On the Role of Neuronal Magnetic Susceptibility and Structure Symmetry on Gradient Echo MR Signal Formation

Keywords

additional anisotropy approximation aqueous architecture arranged arrangement axon axons behavior biophysical brain bulk cellular central chain circular compartment compartments components comprising computer confirmed consequences consider containing contrast contribute contributes correlation course cylindrical damaged decay depend dependences depends described describes describing directly disordering distinct distributed distribution enhanced equations especially example exhibit expression external extracellular extrema fibers field fields formation formed forming frequencies frequency function generalized goal gradient helpful hence highly important importantly inclusions incorporate induce induced inhomogeneous inside intracellular iron isotropic isotropically layers leads linear lipid lipids local long longitudinal longitudinally magnetized magnitude maxwell micro might model modeled molecules neuronal orientation oriented origins oscillations parallel perpendicular phys place predicts presence proposed proteins radially radiology radius recalled redistribution relates role secondary separated sheath short simple simulations solving sphere structural structurally structure structures substantially surrounded surrounding susceptibility symmetry system take term terms theoretical theory tissue traditional transverse type understood units volume water whereas white