Evidence map›Paper›PMID 26045579›Full record

ArticleAJNR. American journal of neuroradiology2015

MR Elastography Can Be Used to Measure Brain Stiffness Changes as a Result of Altered Cranial Venous Drainage During Jugular Compression.

A Hatt, S Cheng, K Tan, R Sinkus, L E Bilston

Open access · hybridAbstract read
In one paragraph

Article in AJNR. American journal of neuroradiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

30 citing papers in PubMed, 63 citations in OpenAlex.

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  14. Brain stiffness following recovery in a patient with an episode of low-pressure hydrocephalus: case report.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2021
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  15. Review
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  18. Cardiac-gated steady-state multifrequency magnetic resonance elastography of the brain: Effect of cerebral arterial pulsation on brain viscoelasticity.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2020
    Article
  19. Review
  20. Hypercapnia increases brain viscoelasticity.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2019
    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

5 authors at 3 institutions in 2 countries.

A HattFrom Neuroscience Research Australia (A.H., S.C., K.T., L.E.B.), Randwick, New South Wales, Australia.
S ChengFrom Neuroscience Research Australia (A.H., S.C., K.T., L.E.B.), Randwick, New South Wales, Australia School of Mechanical Engineering (S.C.), Macquarie University, North Ryde, New South Wales, Australia School of Medical Sciences (S.C.).
K TanFrom Neuroscience Research Australia (A.H., S.C., K.T., L.E.B.), Randwick, New South Wales, Australia Graduate School of Biomedical Engineering (K.T.), University of New South Wales, Kensington, New South Wales, Australia.ORCID http://orcid.org/0000-0003-0976-3808
R SinkusBritish Heart Foundation Centre of Excellence (R.S.), Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners, St. Thomas' Hospital, London, United Kingdom.
L E BilstonFrom Neuroscience Research Australia (A.H., S.C., K.T., L.E.B.), Randwick, New South Wales, Australia Prince of Wales Clinical School (L.E.B.), University of New South Wales, Randwick, New South Wales, Australia. l.bilston@neura.edu.au.
Neuroscience Research Australia · AUUNSW Sydney · AUSt Thomas' Hospital · GB

Funding

Department of Health
6 · The paper itself

Abstract

background and purposeCompressing the internal jugular veins can reverse ventriculomegaly in the syndrome of inappropriately low pressure acute hydrocephalus, and it has been suggested that this works by "stiffening" the brain tissue. Jugular compression may also alter blood and CSF flow in other conditions. We aimed to understand the effect of jugular compression on brain tissue stiffness and CSF flow. MATERIALS AND

methodsThe head and neck of 9 healthy volunteers were studied with and without jugular compression. Brain stiffness (shear modulus) was measured by using MR elastography. Phase-contrast MR imaging was used to measure CSF flow in the cerebral aqueduct and blood flow in the neck.

resultsThe shear moduli of the brain tissue increased with the percentage of blood draining through the internal jugular veins during venous compression. Peak velocity of caudally directed CSF in the aqueduct increased significantly with jugular compression (P < .001). The mean jugular venous flow rate, amplitude, and vessel area were significantly reduced with jugular compression, while cranial arterial flow parameters were unaffected.

conclusionsJugular compression influences cerebral CSF hydrodynamics in healthy subjects and can increase brain tissue stiffness, but the magnitude of the stiffening depends on the percentage of cranial blood draining through the internal jugular veins during compression—that is, subjects who maintain venous drainage through the internal jugular veins during jugular compression have stiffer brains than those who divert venous blood through alternative pathways. These methods may be useful for studying this phenomenon in patients with the syndrome of inappropriately low-pressure acute hydrocephalus and other conditions.

Indexed as

AdultBrainCerebrospinal FluidCerebrovascular CirculationConstriction, PathologicElasticity Imaging TechniquesFemaleHumansHydrocephalusJugular VeinsMagnetic Resonance ImagingMaleShear Strength

Identifiers

PMID26045579
PMCPMC7965045
OpenAlexW2135507137

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.