Accuracy of dipyridamole myocardial contrast echocardiography for the detection of residual stenosis of the infarct-related artery and multivessel disease early after acute myocardial infarction
Rajesh Janardhanan, MD, MRCP* and
Roxy Senior, MD, DM, FRCP, FESC, FACC*,*
* Cardiology Department, Northwick Park Hospital, Harrow, United Kingdom
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Figure 1 Sensitivity of myocardial contrast echocardiography to detect varying degrees of coronary stenosis. Solid bars = infarct-related artery; open bars = non–infarct-related artery.
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Figure 2 Relationship between quantitative myocardial contrast echocardiography parameters at stress and detection of coronary stenosis: (A) peak contrast intensity; (B) microbubble velocity; (C) myocardial blood flow. *Normal versus coronary artery disease.  Between varying grades of stenosis.
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Figure 3 Receiver-operator characteristic curves of quantitative myocardial contrast echocardiography for the prediction of significant coronary stenosis. (A) A reserve. (B) Beta reserve. (C) coronary flow reserve (CFR).
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Figure 4 (A, top panel) Apical three-chamber view shows reversible perfusion defect (posterior wall) at the infarct site. (B, top panel) Apical three-chamber view shows reversible perfusion defect in the remote, normally contracting mid-posterior segment in a patient with anterior acute myocardial infarction. Images at rest (top left) and stress (top right). (Bottom panels) Replenishment curves demonstrate reduced peak contrast intensity (A) and beta during stress, suggesting residual infarct-related artery (IRA) stenosis (A) and multivessel disease (B). Red indicates no coronary stenosis; green indicates significant coronary stenosis.
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