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Figure 3 Cardiac SPECT/CTCA: Combined Fused Data of the Myocardial Perfusion and of the Coronary Vessels
Combined SPECT/CTCA data of myocardial perfusion (represented on the left ventricular epicardial surface extracted from the SPECT study) and of the coronary trees. Fused image at stress (left) shows decreased perfusion in the apex and the antero-apical wall (blue region, arrow) corresponding to the vascular territory of the LAD. Fused image at rest (right) shows normal perfusion to the same region. The fused information generated from the perfusion SPECT study and the coronary CTCA demonstrates the presence of myocardial ischemia related to LAD stenosis. The integration of anatomic (CTCA) and physiologic (myocardial perfusion imaging) information indicates that interventional therapy should be directed to the lesion in the LAD. Abbreviations as in Figure 1.
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