Evidence map›Paper›PMID 31648286›Full record

ArticlePloS one2019

Comparison of 4D Flow MRI to 2D Flow MRI in the pulmonary arteries in healthy volunteers and patients with pulmonary hypertension.

Malte Maria Sieren, Clara Berlin, Thekla Helene Oechtering, Peter Hunold, Daniel Drömann, Jörg Barkhausen, Alex Frydrychowicz

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
3.1field-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, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Observational
  5. A Non-Invasive Approach to Pulmonary Hypertension.Journal of clinical medicine · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Clinical Application of 4D Flow MR Imaging to Pulmonary Hypertension.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2022
    Review
  14. Article
  15. Article
  16. The Evolution of Risk Assessment in Pulmonary Arterial Hypertension.Methodist DeBakey cardiovascular journal · 2021
    Article
  17. Article
  18. Emerging role of cardiovascular magnetic resonance imaging in the management of pulmonary hypertension.European respiratory review : an official journal of the European Respiratory Society · 2020
    Review
  19. Cardiac Magnetic Resonance in Pulmonary Hypertension-an Update.Current cardiovascular imaging reports · 2020
    Review
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

7 authors at 1 institution in 1 country.

Malte Maria SierenDepartment of Radiology and Nuclear Medicine, University Hospital Schleswig-Holstein, Lübeck, Germany.ORCID 0000-0002-3669-2892
Clara BerlinDepartment of Radiology and Nuclear Medicine, University Hospital Schleswig-Holstein, Lübeck, Germany.
Thekla Helene OechteringDepartment of Radiology and Nuclear Medicine, University Hospital Schleswig-Holstein, Lübeck, Germany.
Peter HunoldDepartment of Radiology and Nuclear Medicine, University Hospital Schleswig-Holstein, Lübeck, Germany.
Daniel DrömannDepartment of Pneumology, University Hospital Schleswig-Holstein, Lübeck, Germany.
Jörg BarkhausenDepartment of Radiology and Nuclear Medicine, University Hospital Schleswig-Holstein, Lübeck, Germany.ORCID 0000-0001-8937-1198
Alex FrydrychowiczDepartment of Radiology and Nuclear Medicine, University Hospital Schleswig-Holstein, Lübeck, Germany.
University Hospital Schleswig-Holstein · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purpose4D and 2D phase-contrast MRI (2D Flow MRI, 4D Flow MRI, respectively) are increasingly being used to noninvasively assess pulmonary hypertension (PH). The goals of this study were i) to evaluate whether established quantitative parameters in 2D Flow MRI associated with pulmonary hypertension can be assessed using 4D Flow MRI; ii) to compare results from 4D Flow MRI on a digital broadband 3T MR system with data from clinically established MRI-techniques as well as conservation of mass analysis and phantom correction and iii) to elaborate on the added value of secondary flow patterns in detecting PH.

methods11 patients with PH (4f, 63 ± 16y), 15 age-matched healthy volunteers (9f, 56 ± 11y), and 20 young healthy volunteers (13f, 23 ± 2y) were scanned on a 3T MR scanner (Philips Ingenia). Subjects were examined with a 4D Flow, a 2D Flow and a bSSFP sequence. For extrinsic comparison, quantitative parameters measured with 4D Flow MRI were compared to i) a static phantom, ii) 2D Flow acquisitions and iii) stroke volume derived from a bSSFP sequence. For intrinsic comparison conservation of mass-analysis was employed. Dedicated software was used to extract various flow, velocity, and anatomical parameters. Visualization of blood flow was performed to detect secondary flow patterns.

resultsOverall, there was good agreement between all techniques, 4D Flow results revealed a considerable spread. Data improved after phantom correction. Both 4D and 2D Flow MRI revealed concordant results to differentiate patients from healthy individuals, especially based on values derived from anatomical parameters. The visualization of a vortex, indicating the presence of PH was achieved in 9 /11 patients and 2/35 volunteers. DISCUSSION: This study confirms that quantitative parameters used for characterizing pulmonary hypertension can be gathered using 4D Flow MRI within clinically reasonable limits of agreement. Despite its unfavorable spatial and lesser temporal resolution and a non-neglible spread of results, the identification of diseased study participants was possible.

Indexed as

AlgorithmsPhantoms, ImagingAdultBlood Flow VelocityCase-Control StudiesFemaleHealthy VolunteersHemodynamicsHumansHypertension, PulmonaryImage Interpretation, Computer-AssistedImaging, Three-DimensionalMagnetic Resonance ImagingMalePulmonary ArteryStroke Volume

Identifiers

PMID31648286
PMCPMC6812822
OpenAlexW2982284273

What OpenQuestion holds

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LicenceCC BY
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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.