Figure 15

Combined dyssynchrony and scar maps. Endocardial wall motion and scar were quantified using SSFP and LGE-CMR, respectively. The color-encoded regional delay of radial inward motion is mapped onto a bull's eye map and LV model, pictured from above (middle figure) and below (bottom figure). Timing of radial inward motion is expressed as a phase delay ranging from zero to 180°. A phase delay of zero represents early ventricular motion concordant with initial electrical activation and is colour coded blue, while a phase delay of 180° denotes diastolic inward motion and is colour coded red. The LV free wall scar (grey-black) is superimposed on the endocardial wall motion map. In the figure, the LV septum is contracts early in systole and the inferior wall close to the LV free wall scar shows abnormal diastolic radial inward motion. Note the patchy distribution of wall motion throughout the left ventricle. Reproduced with permission from Foley P, et al. [38]