Neurite Orientation Dispersion and Density Imaging in Multiple Sclerosis: A Systematic Review

Author:

Seyedmirzaei Homa1,Nabizadeh Fardin2,Aarabi Mohammad Hadi3,Pini Lorenzo3ORCID

Affiliation:

1. Tehran University of Medical Sciences Tehran Iran

2. Iran University of Medical Sciences Tehran Iran

3. Padova Neuroscience Center (PNC) University of Padova Padova Italy

Abstract

Diffusion‐weighted imaging has been applied to investigate alterations in multiple sclerosis (MS). In the last years, advanced diffusion models were used to identify subtle changes and early lesions in MS. Among these models, neurite orientation dispersion and density imaging (NODDI) is an emerging approach, quantifying specific neurite morphology in both grey (GM) and white matter (WM) tissue and increasing the specificity of diffusion imaging. In this systematic review, we summarized the NODDI findings in MS. A search was conducted on PubMed, Scopus, and Embase, which yielded a total number of 24 eligible studies. Compared to healthy tissue, these studies identified consistent alterations in NODDI metrics involving WM (neurite density index), and GM lesions (neurite density index), or normal‐appearing WM tissue (isotropic volume fraction and neurite density index). Despite some limitations, we pointed out the potential of NODDI in MS to unravel microstructural alterations. These results might pave the way to a deeper understanding of the pathophysiological mechanism of MS.Evidence Level2.Technical EfficacyStage 3.

Publisher

Wiley

Subject

Radiology, Nuclear Medicine and imaging

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