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Abstract #3718

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

1Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University, Kyoto, Japan

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.