Myocardial T1 mapping has recently been applied to the quantification of extracellular volume fraction (ECV) and has shown potential for the detection of myocardial fibrosis. However, for the measurement of ECV, additional scans of pre- and post-contrast T1 mapping are necessary, and the post-processing procedure is time consuming. In this study, the myocardium-to-lumen signal ratio (M/L) in conventional late gadolinium enhancement images with fixed inversion time showed acceptable levels of correlation with ECV obtained by the T1 mapping in non-ischemic cardiomyopathy, suggesting that M/L has the potential to allow for simple quantification of the fibrotic change in non-ischemic cardiomyopathies.
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