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Abstract #1586

Group Analysis of Healthy Aging Microstructural Integrity Parameters

Maíra Siqueira Pinto1, Antonio Carlos Santos2, and Carlos Ernesto Garrido Salmon1

1InBrain Lab, Department of Physics, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil, 2Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil

The aim of this work is to compare FA and AFD as integrity parameter of white matter between groups of different ages to evaluate which areas of the white matter are affected in its fiber composition in the healthy aging process, and to evaluate if it happens in a global or specific manner. The results show that the largest decreases in FA and AFD occur in the brain of the elderly (over 60 years) due to more advanced axonal degeneration. AFD seems to show complementary information for understanding the white matter integrity alterations throughout the lifespan.

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