Evidence map›Paper›PMID 31790877›Full record

ArticleNeuroImage. Clinical2020

Assessment of cerebrovascular dysfunction after traumatic brain injury with fMRI and fNIRS.

Franck Amyot, Kimbra Kenney, Emily Spessert, Carol Moore, Margalit Haber, Erika Silverman, Amir Gandjbakhche, Ramon Diaz-Arrastia

2 registry-linked trialsAbstract read
In one paragraph

Article in NeuroImage. Clinical, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing 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.

NCT01789164 completednot on this map

Measure of Cerebrovascular Dysfunction After Truamatic Brain Injury With Functional Near Infrared Spectroscopy

TypeobservationalSponsorUniformed Services University of the Health SciencesRan2013 to 2015Enrolled100ConditionsTraumatic Brain Injury, Post-concussion Syndrome
NCT06480838 recruitingnot on this mapstarted 2023, after this paper: background citation

Cerebral Autoregulation, Brain Perfusion, and Neurocognitive Outcomes After Traumatic Brain Injury

TypeobservationalSponsorUniversity of Texas Southwestern Medical CenterRan2023 to 2029Enrolled130ConditionsTraumatic Brain Injury With Loss of Consciousness, Brain Injury Traumatic Severe, Brain Injury Traumatic Moderate, TBI (Traumatic Brain Injury)
3 · Its place in the literature

Who cites it

28 citing papers in PubMed.

  1. Article
  2. Cerebrovascular reactivity delay measured by blood oxygen level dependent magnetic resonance imaging and gas challenges: A systematic review.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2026
    Review
  3. Persistent dysmorphology and dysfunction of the brain microvasculature following repeated trauma.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2026
    Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. The Renin Angiotensin System as a Therapeutic Target in Traumatic Brain Injury.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Review
  19. Review
  20. Review
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

8 authors.

Franck AmyotDepartment of Neurology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, USA; Center for Neuroscience and Regenerative Medicine, Department of Neurology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, USA. Electronic address: franck.g.amyot.civ@mail.mil.
Kimbra KenneyDepartment of Neurology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, USA; Center for Neuroscience and Regenerative Medicine, Department of Neurology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, USA.
Emily SpessertDepartment of Neurology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, USA; Center for Neuroscience and Regenerative Medicine, Department of Neurology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, USA.
Carol MooreDepartment of Neurology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, USA; Center for Neuroscience and Regenerative Medicine, Department of Neurology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, USA.
Margalit HaberDepartment of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia.
Erika SilvermanDepartment of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia.
Amir GandjbakhcheSection on Analytical and Functional Biophotonics, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Bethesda, Maryland, USA.
Ramon Diaz-ArrastiaCenter for Neuroscience and Regenerative Medicine, Department of Neurology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, USA; Department of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia.

Funding

Functional and Structural Optical Brain ImagingZIAHD008882 · NICHD · EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH & HUMAN DEVELOPMENT · PI GANDJBAKHCHE, AMIR H · 2009 to 2025
$11.4M
6 · The paper itself

Abstract

Traumatic cerebral vascular injury (TCVI) is a frequent, but under-recognized, endophenotype of traumatic brain injury (TBI).  It likely contributes to functional deficits after TBI and TBI-related chronic disability, and represents an attractive target for targeted therapeutic interventions. The aim of this prospective study is to assess microvascular injury/dysfunction in chronic TBI by measuring cerebral vascular reactivity (CVR) by 2 methods, functional magnetic resonance imaging (fMRI) and functional Near InfraRed Spectroscopy (fNIRS) imaging, as each has attractive features relevant to clinical utility. 42 subjects (27 chronic TBI, 15 age- and gender-matched non-TBI volunteers) were enrolled and underwent outpatient CVR testing by 2 methods, MRI-BOLD and fNIRS, each with hypercapnia challenge, a neuropsychological testing battery, and symptom survey questionnaires. Chronic TBI subjects showed a significant reduction in global CVR compared to HC (p < 0.0001). Mean CVR measures by fMRI were 0.225 ± 0.014 and 0.183 ± 0.026 %BOLD/mmHg for non-TBI and TBI subjects respectively and 12.3 ± 1.8 and 9.2 ± 1.7 mM/mmHg by fNIRS for non-TBI versus TBI subjects respectively. Global CVR measured by fNIRS imaging correlates with results by MRI-BOLD (R = 0.5). Focal CVR deficits seen on CVR maps by fMRI are also observed in the same areas by fNIRS in the frontal regions. Global CVR is significantly lower in chronic TBI patients and is reliably measured by both fMRI and fNIRS, the former with better spatial and the latter with better temporal resolution.  Both methods show promise as non-invasive measures of CVR function and microvascular integrity after TBI.

Indexed as

Brain Injuries, TraumaticCerebrovascular DisordersNeuroimagingAdultCerebrovascular CirculationFemaleHumansHypercapniaMagnetic Resonance ImagingMaleMicrovesselsMiddle AgedNeuropsychological TestsProspective StudiesSpectroscopy, Near-InfraredYoung AdultCerebrovascular reactivity (CVR)Functional magnetic resonance imagingHypercapniaNear-infrared spectroscopyTraumatic brain injury (TBI)

Identifiers

PMID31790877
PMCPMC6909332

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Registered trials

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.