Key result
A global longitudinal strain cutoff of -20.45% predicted cardiac iron loading (T2* < 20 ms) with 83% sensitivity and 54% specificity (AUC 0.609).
Why the study?
Does strain imaging by speckle tracking accurately detect cardiac iron loading compared to T2* MRI in patients with beta-thalassemia major?
Population
45 pediatric and adult patients with beta-thalassemia major from a single institution
Comparison
Strain imaging by speckle tracking… vs Cardiac T2* magnetic resonance imaging
Design
Cross-sectional
Authors
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Strain imaging offers modest accuracy for iron overload screening in thalassemia; hypothesis-generating and requires prospective validation before clinical adoption.
Observational (n=45)
Single-blind
No
Does strain imaging by speckle tracking accurately detect cardiac iron loading compared to T2* MRI in patients with beta-thalassemia major?
Effect estimate: AUC 0.609 (95% CI 0.406-0.813)
Strain imaging echocardiography shows potential for predicting cardiac iron accumulation in beta-thalassemia major, though it requires validation in larger cohorts.
Okay et al. (2021) conducted an observational in Beta-thalassemia major (n=45). Global longitudinal strain by speckle tracking echocardiography vs. Cardiac T2* MRI was evaluated on Prediction of cardiac iron loading (T2* < 20 ms) using global longitudinal strain (AUC 0.609, 95% CI 0.406-0.813). A global longitudinal strain cutoff of -20.45% predicted cardiac iron loading (T2* < 20 ms) with 83% sensitivity and 54% specificity (AUC 0.609).
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