Abstract
The short TI LGE sequence detected a significant higher number of papillary muscle infarction compared to standard LGE sequence (19/54 versus 15/54 respectively). Moreover, in these images papillary muscle infarction was appeared with more sharpness (84.2% vs 53.3%) The contrast-to-noise ratio was higher between infarcted myocardium and blood (77.9±60 vs 19.3±16, p<0.001) and between papillary muscle infarction and blood (69.4±51 vs 39.4±26 respectively, p=0.0157). Conclusions In patients with myocardial infarction, LGE CMR imaging using short inversion times more sensitively detects papillary muscle infarction when compared with standard LGE imaging. Therefore, the additional use of short TI sequences may be useful for verifying or excluding papillary muscle involvement in patients with myocardial infarction.
Highlights
Papillary muscle involvement in acute myocardial infarction (MI) may be associated with new-onset mitral regurgitation and ventricular arrhythmias
The short TI Late gadolinium enhancement (LGE) sequence detected a significant higher number of papillary muscle infarction compared to standard LGE sequence (19/54 versus 15/54 respectively)
In these images papillary muscle infarction was appeared with more sharpness (84.2% vs 53.3%) The contrast-to-noise ratio was higher between infarcted myocardium and blood (77.9±60 vs 19.3±16, p
Summary
Evaluation of papillary myocardial infarction: incremental value of a short time inversion vs standard late enhancement imaging. Annachiara Aldrovandi1*, Stijin PJ De Ridder, Oliver Strohm, Myra Cocker, Matthias Friedrich. From 2011 SCMR/Euro CMR Joint Scientific Sessions Nice, France. From 2011 SCMR/Euro CMR Joint Scientific Sessions Nice, France. 3-6 February 2011
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