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Figure 1 Time course of contrast-enhanced magnetic resonance imaging (MRI) delayed myocardial enhancement in a representative short-axis slice of different infarct regions. (Upper row) Adjusted inversion time (TI); (lower row) constant TI of 300 ms. Using a constant TI of 300 ms for contrast-enhanced MRI showed a decrease of signal intensity and extent of enhancement on later acquisitions compared with an adjusted TI. (Right column) Corresponding single-photon emission computed tomography (SPECT) perfusion defect. (A) Transmural infarction of the inferoseptal wall eight days after infarction (creatine kinase [CK] 431 U/l); (B) subendocardial infarction of the anteroseptal wall seven days after the acute event (CK 1,150 U/l); (C) transmural infarction of the inferior, inferoseptal, and inferolateral wall six days after infarction (CK 1,765 U/l) showing an early subendocardial hypoperfusion, which disappeared on later acquisitions.