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Figure 6 Four-dimensional tissue synchronization imaging (TSI) of a patient with left ventricular dyssynchrony. From the different views (left), a three-dimensional impression of the left ventricle is reconstructed (middle). The region of latest activation is indicated in red. Post-processing yields the polar-map format (upper right) indicating in red the site of latest activation (anteroseptal), and further calculations can be performed (lower right) to further quantify the extent of left ventricular dyssynchrony using different parameters.
