Reproducibility of native and contrast-enhanced CMR techniques to measure lesion size following acute myocardial infarction
نویسندگان
چکیده
Methods Lesion size was independently quantified by 2 experienced observers in total of 120 consecutive CMRs obtained in 30 patients within the first 6 months after AMI using native and contrast-enhanced sequences. Lesion sizes were quantified using a threshold method (cutoff >2SD of remote normal myocardium) on basal, midventricular and apical short-axis left ventricular slices. Lesion size is given as the mean of both observers. Bland-Altman analysis was performed to determine the agreement between the two observers. Non-parametric Levene’s test was used to compare the variances of the relative differences. Statistical analysis was performed using GraphPad Prism 6.
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