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Abstract #3922

In vivo measurement of rat brain water content at 9.4T using super-resolution reconstruction

Dennis C. Thomas1,2, Ana-Maria Oros-Peusquens*1, Michael Schöneck1, Antje Willuweit1, Zaheer Abbas1, Markus Zimmermann1, Jörg Felder1, Avdo Celik1, and N. Jon Shah1,3,4,5
1Institute of Neuroscience and Medicine-4, Forschungszentrum, Jülich, Germany, 2Institute of Neuroradiology, University Hospital Frankfurt, Frankfurt, Germany, 3Institute of Neuroscience and Medicine 11, INM-11, JARA, Forschungszentrum Jülich,, Jülich, Germany, 4JARA - BRAIN - Translational Medicine, Aachen, Germany, Aachen, Germany, 5RWTH Aachen University, Aachen, Germany

Synopsis

Keywords: Quantitative Imaging, Neurofluids, Super-resolution reconstruction, High-field MRI, ex vivoAnimal models have an indisputable role in the investigation of brain pathology. Investigating water content in vivo could lead to a better understanding of pathogenesis and hence, a robust technique to measure water content using MRI would be very beneficial. Here, we adapt a super-resolution-based technique, previously developed for humans, to the rat brain and report in vivo high-resolution (200μm isotropic) water content maps, obtained using a 9.4T MRI scanner. High resolution, isotropic water content maps of the rat brain are demonstrated. The water content values obtained using the proposed MR technique are compared with ex vivo wet/dry methods.

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Keywords