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Native T1 CMR Imaging for Diagnosis of Cardiac Amyloidosis — CMR for CA  

Heart Failure With Preserved Ejection Fraction Clinical Trial

Official title:
Native T1 Cardiac Magnetic Resonance Imaging for Diagnosis of Cardiac Amyloidosis

Clinical Trial Summary

The study aims to test the diagnostic accuracy of native T1 mapping for the diagnosis of cardiac amyloidosis prospectively. The hypothesis is that native T1 mapping with a cut-off value of 1341ms (3 tesla CMR) in older patients with symptomatic heart failure, increased LV wall thickness and elevated cardiac biomarkers is non-inferior to the reference method to diagnose cardiac amyloidosis (CA). As secondary measure, a web-based ATTR probability estimator for the diagnosis of CA will be evaluated.

Clinical Trial Description

Cardiac amyloidosis (CA) is an important differential diagnosis in older patients with symptomatic heart failure with preserved or mid-range ejection fraction and increased left ventricular wall thickness. The prevalence of CA among patients with heart failure and left ventricular (LV) hypertrophy is approximately 13%. However, diagnosis of CA is challenging because specific clinical signs are often lacking. Amyloid fibrils deposit in the extracellular space of the myocardium increases myocardial T1 values on cardiac magnetic resonance (CMR). Therefore, native T1 imaging provides a promising non-invasive method to identify CA. A preliminary retrospective analysis of 128 patients with increased LV wall thickness identified an area under the curve of 0.9954 (p<0.0001) for native T1 to detect CA. The optimal cut-off value was 1341ms, with a sensitivity of 100% and a specificity of 97%. The investigators aim to test the diagnostic accuracy of native T1 mapping with the threshold of 1341ms for the diagnosis of CA compared to the reference method prospectively. Moreover, the web-based ATTR probability estimator for the diagnosis of CA will be evaluated. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04862273
Study type Observational
Source University of Leipzig
Contact
Status Active, not recruiting
Phase
Start date April 1, 2021
Completion date November 2024
View Details
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