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Related Experiment Video

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Magnetic Resonance Derived Myocardial Strain Assessment Using Feature Tracking
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Normal Values for Atrial Deformation Measured by Feature-Tracking Cardiac MRI: A Meta-Analysis.

Qiuyi Cai1, Zhengkai Zhao1, Jin Gao1

  • 1Department of Radiology, The Third People's Hospital of Chengdu, Chengdu, Sichuan, China.

Journal of Magnetic Resonance Imaging : JMRI
|May 29, 2024
PubMed
Summary
This summary is machine-generated.

This meta-analysis provides normal reference ranges for atrial strain parameters using cardiac MRI. Left atrial strain is influenced by age, software, and field strength, while right atrial strain remains consistent.

Keywords:
atrial straincardiac magnetic resonancefeature‐trackingmagnetic resonance imaging

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Area of Science:

  • Cardiology
  • Medical Imaging
  • Biophysics

Background:

  • A lack of consensus exists regarding normal atrial deformation measurements obtained via feature-tracking cardiac MRI.
  • Establishing standardized reference ranges is crucial for accurate clinical interpretation.

Purpose of the Study:

  • To establish reference ranges for atrial strain parameters in healthy individuals.
  • To evaluate the impact of magnetic field strength and analysis software on these measurements.

Main Methods:

  • A meta-analysis of 42 studies, including 2708 subjects, was performed.
  • Data were pooled using a random-effects model, with heterogeneity assessed.
  • Meta-regression and ANOVA were employed to analyze the influence of clinical variables, field strength, and software.

Main Results:

  • Pooled means for left atrial (LA) total strain (εs) were 37.46%, passive strain (εe) 22.73%, and active strain (εa) 16.24%.
  • Pooled means for LA strain rates (SRs, SRe, SRa) were 1.66, -1.95, and -1.83, respectively.
  • Age, field strength, and analysis software significantly influenced LA strain and strain rate measurements, whereas right atrial (RA) strain parameters showed consistency.

Conclusions:

  • This study provides pooled reference values for biatrial strain parameters.
  • LA strain is affected by age, software, and field strength.
  • RA strain demonstrated consistency across varying field strengths and analysis software, suggesting robustness.