Evidence map›Paper›PMID 37254892›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2023

Visualising and semi-quantitatively measuring brain fluid pathways, including meningeal lymphatics, in humans using widely available MRI techniques.

Stefan Sennfält, Michael J Thrippleton, Michael Stringer, Carmen Arteaga Reyes, Francesca Chappell, Fergus Doubal, Daniela J Garcia, Junfang Zhang, Yajun Cheng, Joanna Wardlaw

Open access · hybridAbstract 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, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

19 citing papers in PubMed, 23 citations in OpenAlex.

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  13. Imaging brain fluid dynamics and waste clearance involving perivascular spaces in cerebral small vessel disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
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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

10 authors at 5 institutions in 3 countries.

Stefan SennfältDepartment of Neurology, Karolinska University Hospital, Stockholm, Sweden.ORCID 0000-0002-7114-2757
Michael J ThrippletonCentre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK.
Michael StringerCentre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK.ORCID 0000-0002-3811-4439
Carmen Arteaga ReyesCentre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK.ORCID 0000-0003-2424-7123
Francesca ChappellCentre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK.
Fergus DoubalCentre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK.
Daniela J GarciaCentre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK.
Junfang ZhangDepartment of Neurology, Shanghai General Hospital and Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Yajun ChengDepartment of Neurology, West China Hospital and Sichuan University, Chengdu, China.ORCID 0000-0002-5227-9811
Joanna WardlawCentre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK.ORCID 0000-0002-9812-6642
University of Edinburgh · GBKarolinska University Hospital · SEShanghai Jiao Tong University · CNSichuan University · CNUK Dementia Research Institute · GB

Funding

Medical Research CouncilWellcome TrustWellcome Trust 104916/Z/14/Z
6 · The paper itself

Abstract

Brain fluid dynamics remains poorly understood with central issues unresolved. In this study, we first review the literature regarding points of controversy, then pilot study if conventional MRI techniques can assess brain fluid outflow pathways and explore potential associations with small vessel disease (SVD). We assessed 19 subjects participating in the Mild Stroke Study 3 who had FLAIR imaging before and 20-30 minutes after intravenous Gadolinium (Gd)-based contrast. Signal intensity (SI) change was assessed semi-quantitatively by placing regions of interest, and qualitatively by a visual scoring system, along dorsal and basal fluid outflow routes. Following i.v. Gd, SI increased substantially along the anterior, middle, and posterior superior sagittal sinus (SSS) (82%, 104%, and 119%, respectively), at basal areas (cribriform plate, 67%; jugular foramina, 72%), and in narrow channels surrounding superficial cortical veins separated from surrounding cerebrospinal fluid (CSF) (96%) (all p < 0.001). The SI increase was associated with higher intraparenchymal perivascular spaces (PVS) scores (Std. Beta 0.71, p = 0.01). Our findings suggests that interstitial fluid drainage is visible on conventional MRI and drains from brain parenchyma via cortical perivenous spaces to dural meningeal lymphatics along the SSS remaining separate from the CSF. An association with parenchymal PVS requires further research, now feasible in humans.

Indexed as

BrainStrokeHumansMagnetic Resonance ImagingPilot Projectsbrain fluid drainageglymphaticsMeningeal lymphaticsMRIsmall vessel disease

Identifiers

PMID37254892
PMCPMC10581238
OpenAlexW4378781444

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.