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Prognostic role of CMR in acute myocardial infarction


Cardiac Magnetic Resonance (CMR) provides a comprehensive non-invasive characterization of acute myocardial infarction (MI).


to test whether a single CMR study may improve the prognostic stratification of MI patients.


29 patients were studied on day 3 ± 1 after a first MI, between June 2006 and April 2007. CMR included SSFP and T2 STIR sequences, first pass perfusion, Early (EGE: 1 to 2 minutes) and Late (LGE: 10 to 15 minutes) Gadolinium Enhancement. Subsequent clinical management was not affected from CMR results, and patients underwent the usual clinical and echocardiographic follow-up. In 2009 we tested the occurrence of the end-point of cardiac death or left ventricular (LV) remodelling (EDVi > 90 ml/m2 or LVEF < 50% at echocardiographic follow-up) in the studied population.


At 23 ± 5 months follow-up, the endpoint was observed in 7 pts (25%): 1 cardiac death, 6 adverse LV remodeling. See Table 1 for the prognostic role of different CMR parameters: among the tested parameters, myocardial haemorrhage, observed in 8 pts (27%), has a unique 96,5% accuracy in predicting the endpoint, with a 100% NPV. Unexpectedly, LGE-based parameters such as total infarct mass and the presence MVO show prognostic accuracy similar to the echocardiographic LVEF <50%. The 7 pts reaching the endpoint show both MVO (globally present in 15 pts -51%-) and Myocardial Haemorrhage. It seems that the assessment of MVO should keep in account the total amount and not only the mere presence of MVO: this hampers the usefulness of MVO, since the total amount changes over time.

Table 1


T2-STIR images allow a long-term prognostic stratification of unrivalled accuracy during the acute phase of MI. The use of gadolinium do not significantly improve the prognostic accuracy of CMR.

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Open Access This article is published under license to BioMed Central Ltd. This is an Open Access article is distributed under the terms of the Creative Commons Attribution 2.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Monti, L., Corrada, E., Presbitero, P. et al. Prognostic role of CMR in acute myocardial infarction. J Cardiovasc Magn Reson 12 (Suppl 1), P293 (2010).

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