Comparative analysis of left ventricular ejection fraction assessment: visual estimation via echocardiography versus quantitative measurement through cardiovascular magnetic resonance imaging

Muhammad Ahmed Tamiz; Rizwan Ali Khawaja; Fateh Ali Tipoo Sultan; Anum Rahim

doi:10.47144/phj.v57i2.2753

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Comparative analysis of left ventricular ejection fraction assessment: visual estimation via echocardiography versus quantitative measurement through cardiovascular magnetic resonance imaging

Author(s)

Muhammad Ahmed Tamiz Aga Khan University Hospital,Karachi,Pakistan

Rizwan Ali Khawaja Aga Khan University Hospital,Karachi,Pakistan

Fateh Ali Tipoo Sultan Aga Khan University Hospital,Karachi,Pakistan

Anum Rahim Aga Khan University Hospital,Karachi,Pakistan

Abstract

Objectives: This retrospective observational study aimed to evaluate the correlation between visually estimated left ventricular ejection fraction (LVEF) via 2D echocardiography (ECHO) and quantitatively measured LVEF via cardiovascular magnetic resonance imaging (CMR) . Methodology: The study was conducted at Aga Khan University Hospital, involvin g patients who underwent both 2D ECHO and CMR within a maximum interval of three months between the two studies. LVEF was visually estimated by experienced cardiologists on 2D ECHO and quantitatively calculated on CMR. Results: Among 127 patients meeting inclusion criteria, comparisons between visually estimated LVEF ranges on ECHO and LVEF on CMR consistently showed highly significant differences (p < 0.0001), with ECHO underestimating LVEF. The mean difference between visually estimated average LVEF by ECHO and calculated LVEF by CMR was 4.9 ± 7.0. Subgroup analysis revealed consistent findings across patients with coronary artery disease (CAD) and those with dilated or hypertrophic cardiomyopathy. Conclusion: Despite a significant difference, the observed discrepancy in LVEF values between visually estimated ECHO and quantitatively measured CMR remains small. Thus, visually estimated LVEF by experienced readers retains its reliability as a method for diagnosing and managing patients in routine clinical practice.

Publication Details

Page(s) 117-121

DOI 10.47144/phj.v57i2.2753

Published Journal: Pakistan Heart Journal, Volume: 57, Issue: 2, Year: 2024

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Keywords

Coronary Artery Disease (CAD), Cardiovascular magnetic resonance (CMR), left ventricular ejection fraction (LVEF), dilated cardiomyopathy (DCM), hypertrophic cardiomyopathy (HCM)

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