Abstract
1074 Circumferential strain encoding of the left ventricle using CIRCOME: sequence, algorithm and factor analysis
Highlights
Circumferential strain of the left ventricle reflects myocardial contractility and is considered a key index of cardiac function
CIRCOME calculates the circumferential strain through relative changes in the compression level of corresponding regions before and after deformation
This technique can be implemented in 3D as well as 2D and may be employed to estimate the overall global or regional circumferential strain
Summary
Circumferential strain of the left ventricle reflects myocardial contractility and is considered a key index of cardiac function It is an important parameter in the quantitative evaluation of heart failure. CIRCOME bypasses these two time-consuming and noise sensitive steps by directly using the frequency domain (k-space) information from radially tagged myocardium, before and after deformation. It uses the ringshaped crown region of the k-space, generated by the taglines, to reconstruct circumferentially compressionweighted images of the heart before and after deformation. This study describes the pulse sequence and algorithm of CIRCOME It further evaluates influencing factors and limiting criteria for this method through the analytical calculations as well as simulated results
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