Evidence map›Paper›PMID 30361295›Full record

ArticleJournal of neurology, neurosurgery, and psychiatry2019

Neurite orientation and dispersion density imaging (NODDI) detects cortical and corticospinal tract degeneration in ALS.

Rebecca J Broad, Matt C Gabel, Nicholas G Dowell, David J Schwartzman, Anil K Seth, Hui Zhang, Daniel C Alexander, Mara Cercignani, P Nigel Leigh

Open access · hybridAbstract read
In one paragraph

Article in Journal of neurology, neurosurgery, and psychiatry, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 2 pooled it
8.1field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

66 citing papers in PubMed, 2 syntheses or guidelines pooled it, 98 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Potential Roles of Neuroimaging in Motor Neuron Disease.Current neurology and neuroscience reports · 2026
    Review
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6 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 2 countries.

Rebecca J BroadDepartment of Neuroscience, Trafford Centre for Biomedical Research, Brighton and Sussex Medical School, Brighton, UK r.broad@bsms.ac.uk.
Matt C GabelDepartment of Neuroscience, Trafford Centre for Biomedical Research, Brighton and Sussex Medical School, Brighton, UK.ORCID 0000-0001-5373-011X
Nicholas G DowellDepartment of Neuroscience, Trafford Centre for Biomedical Research, Brighton and Sussex Medical School, Brighton, UK.
David J SchwartzmanSackler Centre Consciousness Science, University of Sussex, Brighton, UK.
Anil K SethSackler Centre Consciousness Science, University of Sussex, Brighton, UK.
Hui ZhangCentre for Medical Image Computing and Department of Computer Science, University College London, London, UK.
Daniel C AlexanderCentre for Medical Image Computing and Department of Computer Science, University College London, London, UK.
Mara CercignaniDepartment of Neuroscience, Trafford Centre for Biomedical Research, Brighton and Sussex Medical School, Brighton, UK.
P Nigel LeighDepartment of Neuroscience, Trafford Centre for Biomedical Research, Brighton and Sussex Medical School, Brighton, UK.
Brighton and Sussex Medical School · GBUniversity College London · GBUniversity of Sussex · GB

Funding

Motor Neurone Disease Association GABEL/OCT16/966-799Motor Neurone Disease Association LEIGH/APR14/824-791
6 · The paper itself

Abstract

backgroundCorticospinal tract (CST) degeneration and cortical atrophy are consistent features of amyotrophic lateral sclerosis (ALS). We hypothesised that neurite orientation dispersion and density imaging (NODDI), a multicompartment model of diffusion MRI, would reveal microstructural changes associated with ALS within the CST and precentral gyrus (PCG) 'in vivo'.

methods23 participants with sporadic ALS and 23 healthy controls underwent diffusion MRI. Neurite density index (NDI), orientation dispersion index (ODI) and free water fraction (isotropic compartment (ISO)) were derived. Whole brain voxel-wise analysis was performed to assess for group differences. Standard diffusion tensor imaging (DTI) parameters were computed for comparison. Subgroup analysis was performed to investigate for NODDI parameter differences relating to bulbar involvement. Correlation of NODDI parameters with clinical variables were also explored. The results were accepted as significant where p<0.05 after family-wise error correction at the cluster level, clusters formed with p<0.001.

resultsIn the ALS group NDI was reduced in the extensive regions of the CST, the corpus callosum and the right PCG. ODI was reduced in the right anterior internal capsule and the right PCG. Significant differences in NDI were detected between subgroups stratified according to the presence or absence of bulbar involvement. ODI and ISO correlated with disease duration.

conclusionsNODDI demonstrates that axonal loss within the CST is a core feature of degeneration in ALS. This is the main factor contributing to the altered diffusivity profile detected using DTI. NODDI also identified dendritic alterations within the PCG, suggesting microstructural cortical dendritic changes occur together with CST axonal damage.

Indexed as

AgedAmyotrophic Lateral SclerosisAxonsCase-Control StudiesCerebral CortexDiffusion Magnetic Resonance ImagingFemaleFrontal LobeHumansMaleMiddle AgedNeuritesPyramidal Tracts

Identifiers

PMID30361295
PMCPMC6581155
OpenAlexW2898209364

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.