Abstract
Magnetic resonance techniques are in an early phase of their application to detect viable myocardium after myocardial infarction. However, magnetic resonance imaging (MRI) seems ideally suited to detect the regional wall thinning associated chronic myocardial scar [1-5]. In contrast to akinetic and thinned transmural chronic infarcts [6-9], acutely infarcted myocardium may be transmurally necrotic and akinetic but may not yet exhibit myocardial thinning [9]. Therefore, assessment of wall thickness by MRI is not sufficient to determine viability. Stimulation of residual contractility by catecholamines, which is well known from viability studies using left ventricular angiography [10], radionuclide ventriculography [11], or echocardiography [12], can also be used in conjuction with MRI to demonstrate residual viability in these patients [13]. It is also possible to employ magnetic resonance spectroscopy, especially in the setting of acute myocardial infarction, where substantial myocardial wall thinning has not yet occurred to document the presence or absence of high-energy phosphates as indicators of viable myocardium [14].
Keywords
- Wall Thickness
- Viable Myocardium
- Wall Motion Abnormality
- Nuclear Magnetic Resonance Imaging
- Systolic Wall
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Sechtem, U., Baer, F.M., Voth, E., Theissen, P., Schneider, C., Schicha, H. (1996). Assessment of viability by MR-techniques. In: Nienaber, C.A., Sechtem, U. (eds) Imaging and Intervention in Cardiology. Developments in Cardiovascular Medicine, vol 173. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0115-5_14
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DOI: https://doi.org/10.1007/978-94-009-0115-5_14
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