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Figure 4 (A) Right anterior oblique view of the left ventricular angiogram at end-diastole (ed) and end-systole (es) of a patient with severe hypokinesia of the anterior wall after anterior myocardial infarction. (B) Long- and short-axis positron emission computed tomography (PET) and single photon emission computed tomography (SPECT) images and corresponding polar maps showing an apical scar and reduced perfusion but preserved F-18 fluorodeoxyglucose (FDG) uptake in the surrounding anterior wall. (C) Unipolar amplitude map of the LV obtained by endocardial mapping (left: right anterior oblique view [RAO]; right: anteroposterior [AP] view). Color coding ranges from <6 mV (red) to >25 mV (purple). The apex is displayed with low amplitude, whereas the adjacent anterior wall has higher amplitudes. (D) Regional polar view of the unipolar amplitude map of the LV, divided into 12 regions. MIBI = Tc 99m sestamibi.