Fig. 4

Left Bundle-Branch Block-cardiomyopathy. The figure represents two subgroups of LBBB-cardiomyopathy; Patients with isolated ventricular asynchrony and patients with superimposed contractile impairment. a, b representative images of native T1 in patients with isolated ventricular asynchrony (a) and patients with superimposed contractile impairment (b). Colors(1.5 T); green: 955-1052 ms; yellow: 1053-1150 ms; brown 1151-1400 ms. c, d representative images of late gadolinium enhancement (LGE) at the inferior insertion point of the right ventricular free wall (RVIP) of patients with isolated ventricular asynchrony (c) and patients with superimposed contractile impairment (d). Orange arrows indicate a possible development of a superimposed contractile impairment in patients with idiopathic LBBB. LV left ventricle, EF ejection fraction EDV-end-diastolic volume, RV right ventricle