Figure 1

Mid-ventricular short-axis SSFP BOLD, First-pass perfusion (FPP), and Thallium SPECT images obtained from a patient with 70% stenosis of the left anterior descending (LAD) coronary artery at rest and stress. For each imaging method, the windowing and leveling of images obtained at rest and stress are the same. The myocardial signal in the rst BOLD, FP, and SPECT images are relatively homogenous. However, under stress, the territory supplied by the LAD (larger arc subtended by arrow) does not increase in the BOLD images as expected. This pattern of regional signal differences is also evident in the FP and SPECT images.