Fig. 4

Comparisons of signal-to-noise (SNR) using the surface coil and the volume coil, and using one and four excitations. There were significant differences in the SNR of brain structures using the surface coil compared to the volume coil, and using one compared to four excitations. AC, anterior commissure; AD, axial diffusivity; CC, corpus callosum; CT, cortex; EC, external capsule; HP, hippocampus; ICCP, internal capsule and cerebral peduncle; MD, mean diffusivity; ns, not significant; OT, optic tract; RD, radial diffusivity; ST, striatum; SC-1, surface coil and one excitation; SC-4, surface coil and four excitations; VC-1, volume coil and one excitation; VC-4, volume coil and four excitations. *p < 0.05; **p < 0.01; ***p < 0.001