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Figure 1 Interpretation algorithm for the diagnosis of coronary artery disease (CAD). (a) Positive delayed enhancement-cardiovascular magnetic resonance (DE-CMR) study: hyperenhanced myocardium consistent with a prior myocardial infarction (MI) is detected. Does not include isolated midwall or epicardial hyperenhancement, which can occur in nonischemic disorders (21,22). (b) Standard negative stress study: no evidence of prior MI or inducible perfusion defects. (c) Standard positive stress study: no evidence of prior MI, but perfusion defects are present with adenosine that are absent or reduced at rest. (d) Artifactual perfusion defect: matched stress and rest perfusion defects without evidence of prior MI on DE-CMR.
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