Evidence map›Paper›PMID 35403247›Full record

ArticleMagnetic resonance in medicine2022

Real-time imaging of respiratory effects on cerebrospinal fluid flow in small diameter passageways.

Johannes Töger, Mads Andersen, Olle Haglund, Tekla Maria Kylkilahti, Iben Lundgaard, Karin Markenroth Bloch

Open access · hybridAbstract read
In one paragraph

Article in Magnetic resonance in medicine, 2022. 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, 34 citations in OpenAlex.

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  9. Glymphatic and meningeal lymphatic dysfunction in Alzheimer's disease: Mechanisms and therapeutic perspectives.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

6 authors at 1 institution in 1 country.

Johannes TögerDepartment of Clinical Sciences Lund, Diagnostic Radiology, Lund University, Skåne University Hospital, Lund, Sweden.ORCID 0000-0002-3365-7282
Mads AndersenPhilips Healthcare, Copenhagen, Denmark.ORCID 0000-0002-2702-1640
Olle HaglundDepartment of Medical Radiation Physics, Lund University, Lund, Sweden.
Tekla Maria KylkilahtiDepartment of Experimental Medical Science, Lund University, Lund, Sweden.ORCID 0000-0001-6207-5452
Iben LundgaardDepartment of Experimental Medical Science, Lund University, Lund, Sweden.
Karin Markenroth BlochLund University, Lund University Bioimaging Center, Lund, Sweden.ORCID 0000-0002-3310-6667
Lund University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeRespiration-related CSF flow through the cerebral aqueduct may be useful for elucidating physiology and pathophysiology of the glymphatic system, which has been proposed as a mechanism of brain waste clearance. Therefore, we aimed to (1) develop a real-time (CSF) flow imaging method with high spatial and sufficient temporal resolution to capture respiratory effects, (2) validate the method in a phantom setup and numerical simulations, and (3) apply the method in vivo and quantify its repeatability and correlation with different respiratory conditions.

methodsA golden-angle radial flow sequence (reconstructed temporal resolution 168 ms, spatial resolution 0.6 mm) was implemented on a 7T MRI scanner and reconstructed using compressed sensing. A phantom setup mimicked simultaneous cardiac and respiratory flow oscillations. The effect of temporal resolution and vessel diameter was investigated numerically. Healthy volunteers (n = 10) were scanned at four different respiratory conditions, including repeat scans.

resultsPhantom data show that the developed sequence accurately quantifies respiratory oscillations (ratio real-time/reference Q

conclusionsThe presented real-time flow MRI method can quantify respiratory-related variations of CSF flow in the cerebral aqueduct, but it underestimates rapid cardiac oscillations. In vivo, the method showed good repeatability and a relationship between flow and respiration.

Indexed as

Cerebral AqueductMagnetic Resonance ImagingBrainCerebrospinal FluidHumansPhantoms, ImagingRespirationcerebrospinal fluidCSFflowmagnetic resonance imagingMRIreal-time

Identifiers

PMID35403247
PMCPMC9324219
OpenAlexW4223435337

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Registered trials

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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.