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01-12-2004 | Cardiac

Visual estimation of the global myocardial extent of hyperenhancement on delayed contrast-enhanced MRI

Authors: Alexandre Comte, Alain Lalande, Paul M. Walker, Alexandre Cochet, Louis Legrand, Yves Cottin, Jean-Eric Wolf, François Brunotte

Published in: European Radiology | Issue 12/2004

Abstract

MRI with paramagnetic contrast agent allows the assessment of the extent of myocardial tissue injury after infarction. Visual segmental scoring has been widely used to define the transmural extent of myocardial infarction, but no attempt has been made to use visual scores in order to assess the percentage of the whole myocardium infarcted. By summing all the segmental scores using a 17-segment model, a global index of the size of the infarcted myocardium is easily obtained. The entire left ventricle of 60 patients with a recent myocardial infarction was scanned using an ECG-gated gradient echo sequence after injection of gadolinium contrast agent. The global score was defined as the sum of the scores on each segment, and expressed as a percentage of the maximum possible score. This index was compared with a planimetric evaluation of hyperenhancement, expressed as a percentage of the left ventricle myocardial volume. There is a good correlation between the two methods (r=0.91; y=1.06x+0.20), and the Bland-Altman plot shows a high concordance between the two approaches (mean of the differences =1.45%). A visual approach based on a 17-segment model can be used to evaluate the global myocardial extent of the hyperenhancement with similar results to planimetry.

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Title: Visual estimation of the global myocardial extent of hyperenhancement on delayed contrast-enhanced MRI
Authors: Alexandre Comte
Alain Lalande
Paul M. Walker
Alexandre Cochet
Louis Legrand
Yves Cottin
Jean-Eric Wolf
François Brunotte
Publication date: 01-12-2004
Publisher: Springer-Verlag
Published in: European Radiology / Issue 12/2004
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-004-2483-1

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Visual estimation of the global myocardial extent of hyperenhancement on delayed contrast-enhanced MRI

Abstract

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Abstract

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