Evidence map›Paper›PMID 33745457›Full record

ArticleJournal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance2021

Left atrial 4D flow cardiovascular magnetic resonance: a reproducibility study in sinus rhythm and atrial fibrillation.

Marco Spartera, Guilherme Pessoa-Amorim, Antonio Stracquadanio, Adam Von Ende, Alison Fletcher, Peter Manley, Stefan Neubauer, Vanessa M Ferreira, Barbara Casadei, Aaron T Hess and 1 more

Open access · goldAbstract readVideo-Audio Media
In one paragraph

Article in Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed, 36 citations in OpenAlex.

  1. Review
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  10. Intracardiac flow dynamics in mitral regurgitation: state of the art.European heart journal. Imaging methods and practice · 2025
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. 4D Flow cardiovascular magnetic resonance consensus statement: 2023 update.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2023
    Review
  17. Article
  18. Article
  19. Quality Control for 4D Flow MR Imaging.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2022
    Article
  20. 4D Flow MR Imaging of the Left Atrium: What is Non-physiological Blood Flow in the Cardiac System?Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2022
    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

11 authors at 2 institutions in 1 country.

Marco SparteraDivision of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, West Wing, Headley Way, Oxford, UK. marco.spartera@gmail.com.ORCID 0000-0002-8991-3396
Guilherme Pessoa-AmorimDivision of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, West Wing, Headley Way, Oxford, UK.
Antonio StracquadanioDivision of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, West Wing, Headley Way, Oxford, UK.
Adam Von EndeDepartment of Population Health, CTSU Nuffield University of Oxford, Oxford, UK.
Alison FletcherThe University of Oxford Acute Vascular Imaging Centre (AVIC), Oxford, UK.
Peter ManleyThe University of Oxford Acute Vascular Imaging Centre (AVIC), Oxford, UK.
Stefan NeubauerDivision of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, West Wing, Headley Way, Oxford, UK.
Vanessa M FerreiraDivision of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, West Wing, Headley Way, Oxford, UK.
Barbara CasadeiDivision of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, West Wing, Headley Way, Oxford, UK.
Aaron T Hess *Division of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, West Wing, Headley Way, Oxford, UK.
Rohan S Wijesurendra *Division of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, West Wing, Headley Way, Oxford, UK.
John Radcliffe Hospital · GBUniversity of Oxford · GB

Funding

British Heart Foundation CH/12/3/29609Department of Health NIHR-INF-0065
6 · The paper itself

Abstract

backgroundFour-dimensional (4D) flow cardiovascular magnetic resonance (CMR) allows sophisticated quantification of left atrial (LA) blood flow, and could yield novel biomarkers of propensity for intra-cardiac thrombus formation and embolic stroke. As reproducibility is critically important to diagnostic performance, we systematically investigated technical and temporal variation of LA 4D flow in atrial fibrillation (AF) and sinus rhythm (SR).

methodsEighty-six subjects (SR, n = 64; AF, n = 22) with wide-ranging stroke risk (CHA

resultsSame-day scan-rescan CVs were 6% for peak velocity, 5% for mean velocity, 7% for vorticity, 9% for vortex volume, and 10% for stasis, and were similar between SR and AF subjects (all p > 0.05). Interval-scan variability was similar to same-day scan-rescan variability for peak velocity, vorticity, and vortex volume (all p > 0.05), and higher for stasis and mean velocity (interval scan CVs of 14% and 8%, respectively, both p < 0.05). Longitudinal changes in heart rate and blood pressure at the interval scan in the same subjects were associated with significantly higher variability for LA stasis (p = 0.024), but not for the remaining flow parameters (all p > 0.05). SR subjects showed significantly greater interval-scan variability than AF patients for mean velocity, vortex volume, and stasis (all p < 0.05), but not peak velocity or vorticity (both p > 0.05).

conclusionsLA peak velocity and vorticity are the most reproducible and temporally stable novel LA 4D flow biomarkers, and are robust to changes in heart rate, blood pressure, and differences in heart rhythm.

Indexed as

Atrial Function, LeftHeart RateMagnetic Resonance Imaging, CineAgedAtrial FibrillationCase-Control StudiesFemaleHeart AtriaHumansMaleMiddle AgedObserver VariationPredictive Value of TestsProspective StudiesReproducibility of ResultsTime Factors4D flowCardioembolic riskCardiovascular magnetic resonanceLeft atriumReproducibilityStasisVelocitiesVortexVorticity

Identifiers

PMID33745457
PMCPMC7983287
OpenAlexW3138195800

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.