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Figure 4 (Top row) Representative tetrofosmin SPECT (left panel), FDG-PET (middle panel), and contrast-enhanced magnetic resonance imaging (ceMRI) (right panel) images of the basal myocardial segments of the same patient. The SPECT image shows a perfusion defect extending from the septum to the inferior wall (white arrowheads). FDG-PET demonstrates preserved glucose metabolism in the same region (white arrowheads). On the ceMRI image, a subtle subendocardial area of hyperenhancement is seen extending from the inferoseptal to posterolateral myocardium (black arrowheads). (Bottom row) End-diastolic (left panel) and end-systolic (right panel) frames of the corresponding cine images. An area of akinesia extends along the same region as the hyperenhancement area. This area corresponds to non-contracting but viable myocardium. SPECT = single photon emission computed tomography. Other definitions are defined in Figure 2.
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