Evidence map›Paper›PMID 33274812›Full record

ArticleJournal of veterinary internal medicine2021

Quantification of cerebrospinal fluid flow in dogs by cardiac-gated phase-contrast magnetic resonance imaging.

Muriel A Christen, Daniela Schweizer-Gorgas, Henning Richter, Fabiola B Joerger, Matthias Dennler

Open access · goldAbstract read
In one paragraph

Article in Journal of veterinary internal medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
0.6field-weighted citation impact, top 37% 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

14 citing papers in PubMed, 17 citations in OpenAlex.

  1. Comparison ofMolecular therapy. Nucleic acids · 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

5 authors at 2 institutions in 1 country.

Muriel A ChristenDivision of Clinical Radiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.
Daniela Schweizer-GorgasDivision of Clinical Radiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.ORCID https://orcid.org/0000-0003-4600-6523
Henning RichterClinic of Diagnostic Imaging, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.ORCID https://orcid.org/0000-0003-3696-6993
Fabiola B JoergerDepartment of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
Matthias DennlerClinic of Diagnostic Imaging, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
University of Zurich · CHUniversity of Bern · CH

Funding

Albert Heim foundation, Swiss Cynological Society, Switzerland.
6 · The paper itself

Abstract

backgroundCerebrospinal fluid (CSF) flow in disease has been investigated with two-dimensional (2D) phase-contrast magnetic resonance imaging (PC-MRI) in humans. Despite similar diseases occurring in dogs, PC-MRI is not routinely performed and CSF flow and its association with diseases is poorly understood.

objectivesTo adapt 2D and four-dimensional (4D) PC-MRI to dogs and to apply them in a group of neurologically healthy dogs. ANIMALS: Six adult Beagle dogs of a research colony.

methodsProspective, experimental study. Sequences were first optimized on a phantom mimicking small CSF spaces and low velocity flow. Then, 4D PC-MRI and 2D PC-MRI at the level of the mesencephalic aqueduct, foramen magnum (FM), and cervical spine were performed.

resultsCSF displayed a bidirectional flow pattern on 2D PC-MRI at each location. Mean peak velocity (and range) in cm/s was 0.92 (0.51-2.08) within the mesencephalic aqueduct, 1.84 (0.89-2.73) and 1.17 (0.75-1.8) in the ventral and dorsal subarachnoid space (SAS) at the FM, and 2.03 (range 1.1-3.0) and 1.27 (range 0.96-1.82) within the ventral and dorsal SAS of the cervical spine. With 4D PC-MRI, flow velocities of >3 cm/s were visualized in the phantom, but no flow data were obtained in dogs.

conclusionPeak flow velocities were measured with 2D PC-MRI at all 3 locations and slower velocities were recorded in healthy Beagle dogs compared to humans. These values serve as baseline for future applications. The current technical settings did not allow measurement of CSF flow in Beagle dogs by 4D PC-MRI.

Indexed as

HeartMagnetic Resonance ImagingAnimalsCerebrospinal FluidCervical VertebraeDogsProspective Studiesbaselinecanineflow velocityMRI

Identifiers

PMID33274812
PMCPMC7848380
OpenAlexW3107547143

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.