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Abstract #4356

MRI Correlates of 18F-AV133 in Parkinson's Disease

Jason Langley1 and Xiaoping Hu1,2
1Center for Advanced Neuroimaging, University of California Riverside, Riverside, CA, United States, 2Department of Bioengineering, University of California Riverside, Riverside, CA, United States

Synopsis

Keywords: Parkinson's Disease, Parkinson's Disease, VMAT2, striatum, iron

Motivation: The limited availability and high cost of 18F-AV133 PET impedes its widespread adoption for use in diagnosis of Parkinson’s disease.

Goal(s): Our goal was to assess the relationship between 18F-AV133 PET and MRI imaging markers in Parkinson's disease.

Approach: Magnetization transfer and relaxometry imaging metrics derived in the basal ganglia of Parkinson's disease patients were compared to standardized uptake ratios from 18F-AV133 PET.

Results: Significant correlations were seen between 18F-AV133 PET and MRI imaging metrics. These results suggest that MRI is able to capture neurodegenerative processes in Parkinson's disease.

Impact: Our demonstration of the relationship between 18F-AV133 PET and MRI imaging markers suggests MRI imaging markers may serve as a surrogate measure for the integrity of the nigrostriatal system in Parkinson's disease.

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