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Related Concept Videos

Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

165
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
165

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Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
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Left atrial strain: a multi-modality, multi-vendor comparison study.

Faraz Pathan1,2,3, Hafisyatul Aiza Zainal Abidin1,4, Quang Ha Vo2

  • 1Department of Cardiovascular Imaging, Institute for Experimental and Translational Cardiovascular Imaging, DZHK Centre for Cardiovascular Imaging, University Hospital Frankfurt, Frankfurt am Main, Germany.

European Heart Journal. Cardiovascular Imaging
|December 19, 2019
PubMed
Summary

Left atrial strain measurements show good correlation between vendors and imaging methods, but systematic differences exist. Further research is needed to address these variations for accurate prognostic use.

Keywords:
atrial deformationatrial strainfeature trackingmulti-vendor multi-modalityspeckle tracking

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Area of Science:

  • Cardiovascular imaging and diagnostics
  • Cardiac mechanics and hemodynamics

Background:

  • Left atrial (LA) strain is a valuable prognostic biomarker in cardiovascular diseases.
  • Limited data exist on intervendor and intermodality differences for LA strain assessment.

Purpose of the Study:

  • To compare intervendor and intermodality differences in LA strain measurements.
  • To evaluate transthoracic echocardiography (TTE) versus cardiac magnetic resonance (CMR) derived LA strain.

Main Methods:

  • Evaluated 54 subjects (patients and healthy volunteers).
  • Compared TTE- and CMR-derived LA reservoir strain (ƐR), conduit strain (ƐCD), and contractile strain (ƐCT).
  • Utilized four post-processing software types; assessed correlation and systematic bias.

Main Results:

  • Modest to excellent intervendor and intermodality correlation for LA strain components (ICC 0.58-0.90).
  • Systematic bias observed between vendors and modalities (mean differences 0.3-12.2%).
  • Intraobserver and interobserver variability noted (COV 6.5-18.7%).

Conclusions:

  • LA strain components show good correlation across vendors and modalities.
  • Systematic differences in LA strain measurements exist between vendors and imaging techniques.
  • Future studies should focus on calibration, semi-quantitative approaches, and reproducibility improvements.