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Abstract #4051

In vivo tau and diffusion correlation in Alzheimer’s disease

Aziz M. Ulug1,2, Richard Watts3, Robert K. Haxton1, Robert Melton Jr.1, and Sebastian Magda1
1Cortechs Labs, Inc, San Diego, CA, United States, 2Institute of Biomedical Engineering, Bogazici University, Istanbul, Turkey, 3University of Canterbury, Christchurch, New Zealand

Synopsis

Keywords: Alzheimer's Disease, Aging

Motivation: To investigate the microstructural changes caused by tau deposits in Alzheimer's disease.

Goal(s): Use diffusion imaging in vivo to detect microstructural changes related to tau deposits.

Approach: We used MR diffusion and PET tau images in conjunction with native space segmentation maps from T1-weighted images to explore correlations between tau deposits and diffusion maps in a group of patients with Alzheimer’s disease.

Results: There is decreased diffusion in gray matter with increasing tau deposits in Alzheimer's patients which may be used for non-invasive monitoring of disease progression.

Impact: Diffusion MRI may provide a proxy measure of tau deposits in gray matter and may decrease the need for repeated radioactive tracer use for monitoring Alzheimer's disease progression.

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