Evidence map›Paper›PMID 32125636›Full record

ArticleLa Radiologia medica2020

Left ventricular global myocardial strain assessment: Are CMR feature-tracking algorithms useful in the clinical setting?

Palumbo Pierpaolo, Symons Rolf, Barreiro-Pérez Manuel, Curione Davide, Tom Dresselaers, Piet Claus, Jan Bogaert

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in La Radiologia medica, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

13 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Palumbo PierpaoloDepartment of Imaging and Pathology, KU Leuven - University of Leuven, Herestraat 49, 3000, Leuven, Belgium.
Symons RolfDepartment of Imaging and Pathology, KU Leuven - University of Leuven, Herestraat 49, 3000, Leuven, Belgium.
Barreiro-Pérez ManuelServicio de Cardiología, Hospital Universitario de Salamanca, Instituto de Investigación Biomédica de Salamanca (IBSAL), Facultad de Medicina, Universidad de Salamanca, y CIBERCV, Salamanca, Spain.
Curione DavideDepartment of Radiology, Ospedale Bambin Jésu, Vatican City, Italy.
Tom DresselaersDepartment of Imaging and Pathology, KU Leuven - University of Leuven, Herestraat 49, 3000, Leuven, Belgium.
Piet ClausLab on Cardiovascular Imaging & Dynamics, Department of Cardiovascular Sciences, KU Leuven - University of Leuven, Herestraat 49, Louvain, Belgium.
Jan BogaertDepartment of Imaging and Pathology, KU Leuven - University of Leuven, Herestraat 49, 3000, Leuven, Belgium. jan.bogaert@uzleuven.be.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesMyocardial strains can be calculated using cardiovascular magnetic resonance (CMR) feature-tracking (FT) algorithms. They show excellent intra- and inter-observer agreement but rather disappointing inter-vendor agreement. Currently, it is unknown how well CMR-FT-based strain values agree with manually obtained strain values.

methodsIn 45 subjects (15 controls, 15 acute myocardial infarction, 15 non-ischemic dilated cardiomyopathy), end-systolic manually derived strains were compared to four CMR-FT software packages. Global radial strain (GRS), global circumferential strain (GCS) and global longitudinal strain (GLS) were determined. Intra- and inter-observer agreement and agreement between manual and CMR-FT analysis were calculated. Statistical analysis included Bland-Altman plots, intra-class correlation coefficient (ICC) and coefficient of variation (CV).

resultsManual contouring yielded excellent intra-observer (ICC 0.903 (GRS) to 0.995 (GCS)) and inter-observer agreement (ICC 0.915 (GRS) to 0.966 (GCS)) with CV ranging 4.7% (GCS) to 20.7% (GRS) and 12.7% (GCS) to 20.0% (GRS), for intra-observer and inter-observer agreement, respectively. Agreement between manual and CMR-FT strain values ranged from poor to excellent, with best agreement for GCS (ICC 0.857-0.935) and intermediate for GLS (ICC 0.591-0.914), while ICC values for GRS ranged widely (ICC 0.271-0.851). In particular, two software packages showed a strong trend toward systematic underestimation of myocardial strain in radial and longitudinal direction, correlating poorly to moderately with manual contouring, i.e., GRS (ICC 0.271, CV 25.2%) and GLS (ICC 0.591, CV 17.6%).

conclusionSome CMR-FT values agree poorly with manually derived strains, emphasizing to be cautious to use these software packages in the clinical setting. In particular, radial and longitudinal strain tends to be underestimated when using manually derived strains as reference.

Indexed as

AlgorithmsSoftwareStress, MechanicalAnalysis of VarianceBiomechanical PhenomenaCardiomyopathy, DilatedCase-Control StudiesFemaleHumansMagnetic Resonance Imaging, CineMaleMiddle AgedMyocardial ContractionMyocardial InfarctionReproducibility of ResultsVentricular Dysfunction, LeftFunctionMagnetic resonance imagingMyocardium

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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.