Figure 5

Comparison between the methods in a patient with HCM. Analysis of an original LGE image of a patient with HCM. The upper panel shows the relative distribution of pixel intensity of myocardium (blue line) and the Rayleigh curve derived from the signal of the background-ROI (pink line). The good overlap between the two curves was low (concordance 69%) demonstrating a significant difference between the ideal curve of distribution (Rayleigh) and the measured curve. The thresholds of SD2, SD6 and RC methods are evidenced. In the inferior panels in left to right order are showed the original LGE image contoured, the parametric map derived from the SD2 method, from the SD6 method and from the RC method. In this case SD2 committed a large overestimation of enhancement and SD6 a slight underestimation as evidenced in the graph and judged by the investigators by the comparison between the parametric map and the original image.