A revised model for estimating g-ratio from MRI

  title={A revised model for estimating g-ratio from MRI},
  author={Kathryn L. West and Nathaniel D. Kelm and Robert P. Carson and Mark D. Does},
A key measure of white matter health is the g-ratio, which is defined as the ratio between the inner axon radius and the outer, myelinated, axon radius. Recent methods have been proposed to measure the g-ratio non-invasively using the relationship between two magnetic resonance imaging (MRI) measures. While this relationship is intuitive, it predicates on the simplifying assumption that g-ratio is constant across axons. Here, we extend the model to account for a distribution of g-ratio values… CONTINUE READING
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