Evidence map›Paper›PMID 40030091›Full record

ArticleNeurology2025

Association Between Changes in White Matter Volume Detected With Diffusion Tensor-Based Morphometry and Motor Recovery After Stroke.

Matthew A Edwardson, Amritha Nayak, M Okan Irfanoglu, Marie L Luby, Lawrence L Latour, Carlo Pierpaoli

Erratum issuedAbstract read
In one paragraph

Article in Neurology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
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

3 citing papers in PubMed.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Matthew A EdwardsonDepartment of Neurology, Georgetown University, Washington, DC.ORCID 0000-0002-0327-5531
Amritha NayakLaboratory on Quantitative Medical Imaging, National Institute of Biomedical Imaging and Bioengineering, Bethesda, MD.
M Okan IrfanogluLaboratory on Quantitative Medical Imaging, National Institute of Biomedical Imaging and Bioengineering, Bethesda, MD.
Marie L LubyAcute Cerebrovascular Diagnostics Unit, Stroke Branch, National Institute of Neurological Disorders and Stroke, Bethesda, MD.ORCID 0000-0001-7698-5123
Lawrence L LatourAcute Cerebrovascular Diagnostics Unit, Stroke Branch, National Institute of Neurological Disorders and Stroke, Bethesda, MD.ORCID 0000-0001-6160-5263
Carlo PierpaoliLaboratory on Quantitative Medical Imaging, National Institute of Biomedical Imaging and Bioengineering, Bethesda, MD.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectivesDiffusion tensor-based morphometry (DTBM) provides a more accurate assessment of volumetric changes in white matter structures than conventional T1-based TBM techniques. We sought to determine whether DTBM could detect volume loss in the corticospinal tract (CST) and whether this marker was associated with impaired stroke recovery.

methodsRetrospective clinical MRI scans were obtained from a cohort of participants enrolled in a natural history study with acute anterior circulation ischemic stroke and unilateral arm impairment (NIH Stroke Scale [NIHSS] arm motor item score ≥2). Maps of the change in fractional anisotropy (delta FA) and the DTBM log of the Jacobian (LnJ, representing volumetric change) between scans, acquired <36 hours and 30 days after stroke, were computed. Voxel-wise Spearman rank-based analysis identified clustered regions of interest (ROIs) where the delta FA and LnJ from baseline to 30 days correlated with individual arm motor recovery scores on the NIHSS from baseline to 30 days. Qualitative comparisons were made between delta FA and LnJ maps for good and poor recovery groups (delta NIHSS arm item score ≥2 or <2, respectively) in reference to controls.

resultsTwenty-one participants with anterior circulation stroke were evaluated (mean age 63.6 years, median NIHSS arm motor item score 4, 48% female). Voxel-wise statistical maps identified 2 ROIs for delta FA and 4 ROIs for LnJ showing strong correlations with arm motor recovery (range of Spearman ρ = 0.77-0.81, all DISCUSSION: DTBM detects focal volume loss in the CST over the first 30 days after stroke likely related to Wallerian degeneration. These volumetric changes may provide complementary information to FA in characterizing white matter loss after stroke. Like FA, DTBM shows strong correlations with arm motor recovery that could be useful for predicting recovery after stroke.

Indexed as

Diffusion Tensor ImagingPyramidal TractsRecovery of FunctionStrokeWhite MatterAgedFemaleHumansMaleMiddle AgedRetrospective Studies

Identifiers

PMID40030091
PMCPMC11879471

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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.