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Abstract #4048

Exploring Pathology Along the White Matter Tract near Hyperintense Vasogenic Edema through Multiparametric MRI and Diffusion

Youssef Z Wadghiri1,2, Jelle Veraart1,2, Sean Murray3, Jakub Szabo3, Suleiman Khan3, Hannah Goldman1,2, Muhammad Soliman3, Michael Llanos3, Charles V. Kingsley4, Jody Swain4, Stanton Bradley Gray5, William Donald Hopkins5, Thomas Wisniewski3, and Henrieta Scholtzova3
1Radiology, NYU Grossman School of Medicine, New York, NY, United States, 2Bernard and Irene Schwartz Center for Biomedical Imaging & Center for Advanced Imaging Innovation and Research (CAI2R), NYU Grossman School of Medicine, New York, NY, United States, 3Neurology, NYU Grossman School of Medicine, New York, NY, United States, 4Small Animal Imaging Facility, MD Anderson Cancer Center, Houston, TX, United States, 5Michael E. Keeling Center for Comparative Medicine and Research, MD Anderson Cancer Center, Bastrop, TX, United States

Synopsis

Keywords: Alzheimer's Disease, Alzheimer's Disease, Vasogenic edema, white matter hyperintensities.

Motivation: There is a critical need for neuroimaging methodologies that can characterize the neuropathological changes associated with cerebral amyloid angiopathy (CAA) in Alzheimer’s disease (AD).

Goal(s): Our goal was to explore CAA-associated pathology using multiparametric MRI including diffusion MRI.

Approach: A combination of MRI techniques and histopathology was employed to evaluate and characterize the underlying neuropathological changes in a squirrel monkey model of AD.

Results: Unique pathology was found to be present along normal appearing white matter tracts using conventional MRI near areas of hyperintense vasogenic edema.

Impact: Given the prominence of CAA in human AD cases and the critical need for a more proximate model of AD pathology, our study evaluated the feasibility of advanced neuroimaging methodologies characterizing neuropathological changes in squirrel monkeys that develop spontaneous CAA.

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