Title
Promise and pitfalls of g-ratio estimation with MRI.
Abstract
The fiber g-ratio is the ratio of the inner to the outer diameter of the myelin sheath of a myelinated axon. It has a limited dynamic range in healthy white matter, as it is optimized for speed of signal conduction, cellular energetics, and spatial constraints. In vivo imaging of the g-ratio in health and disease would greatly increase our knowledge of the nervous system and our ability to diagnose, monitor, and treat disease. MRI based g-ratio imaging was first conceived in 2011, and expanded to be feasible in full brain white matter with preliminary results in 2013. This manuscript reviews the growing g-ratio imaging literature and speculates on future applications. It details the methodology for imaging the g-ratio with MRI, and describes the known pitfalls and challenges in doing so.
Year
DOI
Venue
2018
10.1016/j.neuroimage.2017.08.038
NeuroImage
Keywords
Field
DocType
g-ratio,MRI,Myelin imaging,Diffusion MRI,White matter,Microstructure
Neuroscience,White matter,Psychology,Neuroimaging,Brain White Matter,Preclinical imaging,Myelin,Myelinated axon
Journal
Volume
ISSN
Citations 
182
1053-8119
11
PageRank 
References 
Authors
0.52
39
8
Name
Order
Citations
PageRank
Jennifer S W Campbell125518.91
Ilana R. Leppert2481.74
Sridar Narayanan316611.38
Mathieu Boudreau4482.08
Tanguy Duval5835.27
Julien Cohen-Adad647229.21
G Bruce Pike7699132.31
Nikola Stikov81047.79