Abstract #2606

Dynamics of white matter tract covariance across lifespan assessed with diffusion spectrum imaging

Yi-Xi Peng¹, Chang-Le Chen², Yung-Chin Hsu³, and Wen-Yih Isaac Tseng^2,4,5

¹Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan, ²Institute of Medical Device and Imaging, National Taiwan University College of Medicine, Taipei, Taiwan, ³Acroviz Technology, Inc., Taipei, Taiwan, ⁴Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan, ⁵Molecular Imaging Center, National Taiwan University College of Medicine, Taipei, Taiwan

In this study, we calculated tract covariance to describe the phenomenon of white matter differentiation and de-differentiation across lifespan, using diffusion spectrum imaging (DSI) and whole brain tract-based automatic analysis (TBAA) techniques. Differentiation was found to be highest in the 2^nd decade and de-differentiation started to emerge at 3^rd decade and peaked at 6^th decade.

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