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Abstract #2296

Effects of high-grade asymptomatic carotid artery stenosis on grey and white matter structure

Lena Schmitzer1, Stephan Kaczmarz1,2, Jens Göttler1, Michael Kallmayer3, Hans-Henning Eckstein3, Dennis Hedderich1, Jan Kufer1, Claus Zimmer1, Christine Preibisch1,4, and Nico Sollmann1,5
1Department of Neuroradiology, School of Medicine, Technical University of Munich, Munich, Germany, 2Philips GmbH Market DACH, Hamburg, Germany, 3Department for Vascular and Endovascular Surgery, School of Medicine, Technical University of Munich, Munich, Germany, 4Department of Neurology, School of Medicine, Technical University of Munich, Munich, Germany, 5Department of Diagnostic and Interventional Radiology, University Hospital Ulm, Ulm, Germany

Synopsis

Keywords: Blood vessels, Diffusion/other diffusion imaging techniquesInternal carotid artery stenosis (ICAS) is a known risk factor for stroke, additionally affecting brain structure and function. We investigated ICAS effects on white and grey matter structure using diffusion tensor imaging (DTI) and cortical thickness assessment, revealing alterations in various indices focused on the corpus callosum without signs of atrophy in grey matter. In addition, small vessel disease (SVD) burden, assessed by peak width of skeletonized mean diffusivity (PSMD), was increased in ICAS patients. Taken together, the structural alterations in white matter might precede those in grey matter, supporting the relevance of assessment of microstructure to detect early changes.

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