Evidence map›Paper›PMID 33444092›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2021

Imaging biomarkers of vascular and axonal injury are spatially distinct in chronic traumatic brain injury.

Margalit Haber, Franck Amyot, Cillian E Lynch, Danielle K Sandsmark, Kimbra Kenney, John K Werner, Carol Moore, Kelley Flesher, Sarah Woodson, Erika Silverman and 3 more

Open access · greenAbstract read
In one paragraph

Article in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 13% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. Traumatic Microhemorrhages Are Not Synonymous With Axonal Injury.Annals of clinical and translational neurology · 2026
    Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Alterations of cerebrovascular reactivity following pediatric mild traumatic brain injury are independent of neurodevelopmental changes.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2025
    Article
  9. Review
  10. Multifaceted neural and vascular pathologies after pediatric mild traumatic brain injury.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
    Article
  11. Cyclosporine as Therapy for Traumatic Brain Injury.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Review
  12. Article
  13. Article
  14. Review
  15. Article
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

13 authors at 4 institutions in 1 country.

Margalit HaberDepartment of Neurology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA.
Franck AmyotNational Intrepid Center of Excellence, Walter Reed National Military Medical Center, Bethesda, MD, USA.
Cillian E LynchDepartment of Neurology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA.
Danielle K SandsmarkDepartment of Neurology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA.
Kimbra KenneyNational Intrepid Center of Excellence, Walter Reed National Military Medical Center, Bethesda, MD, USA.
John K WernerDepartment of Neurology, Uniformed Services University of the Health Sciences, Bethesda, MD, USA.
Carol MooreDepartment of Neurology, Uniformed Services University of the Health Sciences, Bethesda, MD, USA.
Kelley FlesherDepartment of Neurology, Uniformed Services University of the Health Sciences, Bethesda, MD, USA.
Sarah WoodsonDepartment of Neurology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA.
Erika SilvermanDepartment of Neurology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA.
Yiyu ChouCenter for Neuroscience and Regenerative Medicine, Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA.
Dzung PhamCenter for Neuroscience and Regenerative Medicine, Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA.
Ramon Diaz-ArrastiaDepartment of Neurology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA.
University of Pennsylvania · USUniformed Services University of the Health Sciences · USHenry M. Jackson Foundation · USWalter Reed National Military Medical Center · US

Funding

Transforming Research and Clinical Knowledge in Traumatic Brain InjuryU01NS086090 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI DIAZ-ARRASTIA, RAMON, GIACINO, JOSEPH THOMAS · 2013 to 2017
$19.1M
Clinical Validation of Serum Neurofilament Light as a Biomarker of Traumatic Axonal InjuryU01NS114140 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI DIAZ-ARRASTIA, RAMON · 2020 to 2025
$3.9M
Natural History of Traumatic Microvascular InjuryK23NS104239 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI SANDSMARK, DANIELLE KAYE · 2017 to 2021
$929k
NINDS NIH HHS K23 NS104239NINDS NIH HHS U01 NS086090NINDS NIH HHS U01 NS114140
6 · The paper itself

Abstract

Traumatic Brain Injury (TBI) is associated with both diffuse axonal injury (DAI) and diffuse vascular injury (DVI), which result from inertial shearing forces. These terms are often used interchangeably, but the spatial relationships between DAI and DVI have not been carefully studied. Multimodal magnetic resonance imaging (MRI) can help distinguish these injury mechanisms: diffusion tensor imaging (DTI) provides information about axonal integrity, while arterial spin labeling (ASL) can be used to measure cerebral blood flow (CBF), and the reactivity of the Blood Oxygen Level Dependent (BOLD) signal to a hypercapnia challenge reflects cerebrovascular reactivity (CVR). Subjects with chronic TBI (n = 27) and healthy controls (n = 14) were studied with multimodal MRI. Mean values of mean diffusivity (MD), fractional anisotropy (FA), CBF, and CVR were extracted for pre-determined regions of interest (ROIs). Normalized z-score maps were generated from the pool of healthy controls. Abnormal ROIs in one modality were not predictive of abnormalities in another. Approximately 9-10% of abnormal voxels for CVR and CBF also showed an abnormal voxel value for MD, while only 1% of abnormal CVR and CBF voxels show a concomitant abnormal FA value. These data indicate that DAI and DVI represent two distinct TBI endophenotypes that are spatially independent.

Indexed as

AdultAnisotropyAxonsBiomarkersBrainBrain Injuries, TraumaticBrain Injury, ChronicBrain MappingCase-Control StudiesCerebrovascular CirculationFemaleHumansHypercapniaHypocapniaImage Processing, Computer-AssistedMagnetic Resonance ImagingBiomarkersSpin Labelsaxonal injurybiomarkercerebral blood flowcerebrovascular reactivityTraumatic brain injury

Identifiers

PMID33444092
PMCPMC8327117
OpenAlexW3120354081

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.