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Cine MR imaging after myocardial infarction – Assessment and follow-up of regional and global left ventricular function

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Abstract

Myocardial infarction often leads to regional wall motion defects and in case of large defects to remodeling of the left ventricle. With this study, changes in regional and global myocardial function of 12 patients 3 weeks after myocardial infarction and after revascularization therapy were determined using MRI. Cine MRI was performed at study entry at rest and during low-dose dobutamine stimulation. All patients were re-examined at rest 3 and 6 months after the revascularization, including analysis of wall thickening and of left ventricular end-diastolic volume index (LVEDVI), end-systolic volume index (LVESVI), ejection fraction (LVEF), and mass index. After revascularization, 6 patients with stress-induced improvement of regional wall thickening recovered, 4 patients without improvement did not, but 2 patients without stress-induced improvement of wall thickening also recovered. Concerning global cardiac function, patients with mainly improved regional wall motion also showed a lower LVESVI and a higher LVEF than patients without improvement of regional contractility 6 months after revascularization in comparison to study entry. In conclusion, improvement of global myocardial function after revascularization is higher in patients with improved contractility in the infarcted region. The extent of the response of regions with wall motion defects to dobutamine stress correlates with the actual improvement after revascularization, and, therefore, dobutamine stress MRI may be helpful in selecting patients that will have a higher benefit from a revascularization therapy.

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Authors and Affiliations

  1. Institut für Röntgendiagnostik, University of Wuerzburg, Germany

    Joern J.W. Sandstede, Claudia Lipke, Werner Kenn, Meinrad Beer, Thomas Pabst & Dietbert Hahn

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  1. Joern J.W. Sandstede
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  2. Claudia Lipke
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  3. Werner Kenn
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  4. Meinrad Beer
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  5. Thomas Pabst
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  6. Dietbert Hahn
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Sandstede, J.J., Lipke, C., Kenn, W. et al. Cine MR imaging after myocardial infarction – Assessment and follow-up of regional and global left ventricular function. Int J Cardiovasc Imaging 15, 435–440 (1999). https://doi.org/10.1023/A:1006342810026

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