Electroanatomic Characterization of Post-Infarct ScarsComparison With 3-Dimensional Myocardial Scar Reconstruction Based on Magnetic Resonance Imaging
Andrei Codreanu, MD*, ,
Freddy Odille, MS,
Etienne Aliot, MD*,
Pierre-Yves Marie, MD, PhD ,||,
Isabelle Magnin-Poull, MD*,
Marius Andronache, MD*,
Damien Mandry, MD ,
Wassila Djaballah, MD,,
Denis Régent, MD,,
Jacques Felblinger, PhD and
Christian de Chillou, MD, PhD*,,*
* Department of Cardiology, University Hospital Nancy, Nancy, France
Department of Nuclear Medicine, University Hospital Nancy, Nancy, France
Department of Radiology, University Hospital Nancy, Nancy, France
IADI INSERM ERI 13, University Hospital Nancy, Nancy, France
|| UHP-INSERM 684, Medicine School, Nancy, France
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Figure 1 Three-Dimensional LV Reconstruction Based on MRI Data
(A) Short-axis view centered on the left ventricle (LV) with the 32 radial sectors grid and the manually drawn contours of the LV endocardium (green), LV epicardium (dark blue), and LV scar (red). (B) Endocardial and epicardial LV volumes and scar volume are automatically reconstructed using an isosurface algorithm. (C and D) Resulting color-coded three-dimensional map (C, left anterior oblique view; D, right anterior oblique view) of the LV endocardial surface: pale green represents healthy tissue whereas other colors indicate myocardial infarction with various intramural involvements. MRI = magnetic resonance imaging.
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Figure 2 Mismatch in Scar Delineation Between CARTO Bipolar Maps and MRI Shells
(Left) CARTO bipolar maps; (middle) MRI shells; (right) native MRI images. The top row shows underestimated inferior wall scar on the CARTO map. The bottom row shows LV septal scar on the CARTO map not confirmed by MRI. On each panel, the arrows show the mismatch zone. The dotted lines represent the mitral annulus plane. 3D = 3-dimensional; other abbreviations as in Figure 1.
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