Characterizing Sensorimotor-Related Area Abnormalities in Amyotrophic Lateral Sclerosis: An Intravoxel Incoherent Motion Magnetic Resonance Imaging Study

Liu, Yuan-Fen; Zou, Zhang‐Yu; Cai, Li-Min; Lin, Jiahui; Zhou, Minxiong; Huang, Nao-Xin; Zhan, Chuanyin; Chen, Hua-Jun

doi:10.1016/j.acra.2021.07.006

Cited by 2 publications

(1 citation statement)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ALS, yet the blood flow remained steady in other CST subfibers, 46 suggesting the non-uniformity of impairment degree among CST subfibers. Consistently, we found that CST subfibers exhibited distinct degrees of microstructural impairment (e.g., as reflected by NDI reduction) in ALS.…”

Section: Discussionmentioning

confidence: 99%

Corticospinal fibers with different origins impair in amyotrophic lateral sclerosis: A neurite orientation dispersion and density imaging study

et al. 2023

View full text Add to dashboard Cite

AimsTo investigate microstructural impairments of corticospinal tracts (CSTs) with different origins in amyotrophic lateral sclerosis (ALS) using neurite orientation dispersion and density imaging (NODDI).MethodsDiffusion‐weighted imaging data acquired from 39 patients with ALS and 50 controls were used to estimate NODDI and diffusion tensor imaging (DTI) models. Fine maps of CST subfibers originating from the primary motor area (M1), premotor cortex, primary sensory area, and supplementary motor area (SMA) were segmented. NODDI metrics (neurite density index [NDI] and orientation dispersion index [ODI]) and DTI metrics (fractional anisotropy [FA] and mean/axial/radial diffusivity [MD/AD/RD]) were computed.ResultsThe patients with ALS showed microstructural impairments (reflected by NDI, ODI, and FA reductions and MD, AD, and RD increases) in CST subfibers, especially in M1 fibers, which correlated with disease severity. Compared with other diffusion metrics, NDI yielded a higher effect size and detected the greatest extent of CST subfibers damage. Logistic regression analyses based on NDI in M1 subfiber yielded the best diagnostic performance compared with other subfibers and the whole CST.ConclusionsMicrostructural impairment of CST subfibers (especially those originating from M1) is the key feature of ALS. The combination of NODDI and CST subfibers analysis may improve diagnosing performance for ALS.

show abstract

Section: Discussionmentioning

confidence: 99%