Jolesz F A, Polak J F, Adams D F, Ruenzel P W
Radiology. 1987 Jul;164(1):89-91. doi: 10.1148/radiology.164.1.3035608.
The magnetic resonance (MR) relaxation rates of protons were compared in the myelinated and nonmyelinated nerves of the garfish. The long, large olfactory nerve of the garfish, as an easily accessible source of nonmyelinated axons, is uniquely suited for such a comparison. The T1 and T2 measurements revealed distinct and consistent differences between nonmyelinated olfactory nerves and myelinated optic and oculomotor nerves. Comparisons between water content, lipid content, and relaxation rates indicated that the differences in MR properties represent complex differences in the distribution and physical environment of the constituent lipid and water protons.
对雀鳝有髓神经和无髓神经中质子的磁共振（MR）弛豫率进行了比较。雀鳝长而粗大的嗅神经是无髓轴突的一个易于获取的来源，非常适合进行这种比较。T1和T2测量结果显示，无髓嗅神经与有髓视神经和动眼神经之间存在明显且一致的差异。水分含量、脂质含量和弛豫率之间的比较表明，MR特性的差异代表了组成脂质和水质子在分布和物理环境方面的复杂差异。
