Diffusion Tensor Imaging Analysis of Optic Radiation by Readout-Segmented Echo-Planar Imaging

Yamada Hirofumi¹, Yamamoto Akira¹, Okada Tomohisa¹, Kanagaki Mitsunori¹, Kasahara Seiko¹, Sawada Takeshi¹, Morimoto Emiko¹, Sakamoto Ryo¹, Okuchi Sachi¹, To

We investigated diffusion tensor imaging (DTI) parameters of the optic radiation by region of interest (ROI) analysis of readout segmented DTI (RS-DTI) with healthy volunteers. In ROI analysis we observed significant differences of radial diffusivity (RD), fractional anisotropy (FA) and apparent diffusion coefficient (ADC) between the external sagittal stratum and the internal sagittal stratum. We suppose these differences may reflect the disparities of myelination rather than that of axonal density.