Evidence map›Paper›PMID 32931635›Full record

ArticleJournal of cardiovascular electrophysiology2020

Reproducibility of clinical late gadolinium enhancement magnetic resonance imaging in detecting left atrial scar after atrial fibrillation ablation.

Roya Kamali, Joyce Schroeder, Edward DiBella, Benjamin Steinberg, Frederick Han, Derek J Dosdall, Rob S Macleod, Ravi Ranjan

Open access · greenAbstract read
In one paragraph

Article in Journal of cardiovascular electrophysiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.0field-weighted citation impact, top 20% 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

10 citing papers in PubMed, 16 citations in OpenAlex.

  1. Article
  2. Article
  3. Left Atrial Remodeling Identification and Catheter Ablation Outcomes WithJournal of the American Heart Association · 2025
    Article
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  5. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Roya KamaliDepartment of Biomedical Engineering, University of Utah, Salt Lake City, Utah, USA.
Joyce SchroederDepartment of Radiology, University of Utah, Salt Lake City, Utah, USA.
Edward DiBellaDepartment of Radiology, University of Utah, Salt Lake City, Utah, USA.
Benjamin SteinbergDivision of Cardiovascular Medicine, University of Utah, Salt Lake City, Utah, USA.ORCID 0000-0002-4729-7820
Frederick HanDivision of Cardiovascular Medicine, University of Utah, Salt Lake City, Utah, USA.
Derek J DosdallDepartment of Biomedical Engineering, University of Utah, Salt Lake City, Utah, USA.
Rob S MacleodDepartment of Biomedical Engineering, University of Utah, Salt Lake City, Utah, USA.
Ravi RanjanDepartment of Biomedical Engineering, University of Utah, Salt Lake City, Utah, USA.ORCID 0000-0002-3321-2435
University of Utah · US

Funding

His-Purkinje Pacing for Low Energy Implantable Cardioverter DefibrillatorsR01HL128752 · NHLBI · UNIVERSITY OF UTAH · PI DOSDALL, DEREK J · 2015 to 2024
$5.0M
Myocardial Substrate Driven Mechanistic Insights into Atrial FibrillationR01HL142913 · NHLBI · UNIVERSITY OF UTAH · PI RANJAN, RAVI · 2018 to 2021
$2.4M
MRI-based visualization and acute targeting of gaps in atrial ablation lesionsK23HL115084 · NHLBI · UNIVERSITY OF UTAH · PI RANJAN, RAVI · 2012 to 2016
$754k
NHLBI NIH HHS K23 HL115084NHLBI NIH HHS R01 HL128752NHLBI NIH HHS R01 HL142913
6 · The paper itself

Abstract

introductionLate gadolinium enhancement (LGE) cardiac magnetic resonance imaging (MRI) can be used to detect postablation atrial scar (PAAS) but its reproducibility and reliability in clinical scans across different magnetic flux densities and scar detection methods are unknown.

methodsPatients (n = 45) having undergone two consecutive MRIs (3 months apart) on 3T and 1.5T scanners were studied. We compared PAAS detection reproducibility using four methods of thresholding: simple thresholding, Otsu thresholding, 3.3 standard deviations (SD) above blood pool (BP) mean intensity, and image intensity ratio (IIR). We performed a texture study by dividing the left atrial wall intensity histogram into deciles and evaluated the correlation of the same decile of the two scans as well as to a randomized distribution of intensities, quantified using Dice Similarity Coefficient (DSC).

resultsThe choice of scanner did not significantly affect the reproducibility. The scar detection performed by Otsu thresholding (DSC of 71.26 ± 8.34) resulted in a better correlation of the two scans compared with the methods of 3.3 SD above BP mean intensity (DSC of 57.78 ± 21.2, p < .001) and IIR above 1.61 (DSC of 45.76 ± 29.55, p <.001). Texture analysis showed that correlation only for voxels with intensities in deciles above the 70th percentile of wall intensity histogram was better than random distribution (p < .001).

conclusionsOur results demonstrate that clinical LGE-MRI can be reliably used for visualizing PAAS across different magnetic flux densities if the threshold is greater than 70th percentile of the wall intensity distribution. Also, atrial wall-based thresholding is better than BP-based thresholding for reproducible PAAS detection.

Indexed as

Atrial FibrillationCatheter AblationCicatrixContrast MediaGadoliniumHeart AtriaHumansMagnetic Resonance ImagingReproducibility of ResultsContrast MediaGadoliniumatrial fibrillationcatheter ablationlesion assessmentLGE-MRIradiofrequency energyscar reproducibility

Identifiers

PMID32931635
PMCPMC9205620
OpenAlexW3087362708

What OpenQuestion holds

Textmetadata
LicenceTDM
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.