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Figure 4 Pairwise agreement in the diagnosis of segments as viable (V) and nonviable (NV) with dobutamine echocardiography (DbE), contrast-enhanced magnetic resonance imaging (ceMRI), and thallium single-photon emission computed tomography (Tl-SPECT). The top row relates to the correspondence in all 372 segments, whereas the middle and bottom rows reflect the agreement in patients studied 3 months and >3 months after infarction. Each modality demonstrated only moderate agreement with the other two, irrespective of the time since infarction.