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Figure 1 (A) The endocardial surface following dissection through the left lateral free wall following injections with methylene blue. Left ventricle with papillary muscles, left atrium and mitral valve apparatus are displayed. Lateral wall and septum are labeled. Methylene blue injection sites (arrows) are demonstrated at the apex, septum, and posterolateral wall. (B) Corresponding NOGATM map (left anterior oblique [LAO] projection) with injection sites indicated by red hexagons. LA = left arm; RA = right arm.
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