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Abstract #0733

SYNCHROTRON X-RAY PHASE-CONTRAST IMAGING TO SIMULATE DIFFUSION TENSOR MRI: APPLICATION TO TRACTOGRAPHY

Timothée Jacquesson1, Justine Bosc1, Hugo Rositi2, Marlène Wiart3, Fabien Chauveau4, Françoise Peyrin1, David Rousseau5, and Carole Frindel1

1CREATIS UMR 5220, U1206, University of Lyon, Lyon, France, 2Institut Pascal UMR 6602, Université Clermont Auvergne, Le Puy en Velay, France, 3Laboratoire CarMeN, University of Lyon, Lyon, France, 4Lyon Neuroscience Research Center, Lyon, France, 5LARIS, UMR INRA IRHS, Université d'Angers, Angers, France

As it provides the only method for mapping neural tracts in vivo, diffusion MRI tractography is gaining importance in clinical and neuroscience research. However, the precision of tractography results is influenced by many factors. In this study, we propose a highly realistic simulator based on real data acquired by synchrotron x-ray phase-contrast imaging. This imaging technique with histology-like resolution is demonstrated to reveal adequately the mouse brain in 3D by comparison with classical histology, which loses continuity along the sectioning axis. We expect that our simulator may serve as a tool for the validation and optimization of tractography algorithms.

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