Myocardial conduction network visualized by magnetic resonance microscopy/diffusion imaging and validated by histology

Background Magnetic resonance microscopy (MRM), combined with high resolution diffusion imaging, has been used to identify tractography that corresponds to the known distribution of cardiac conducting fibers in the left ventricle. The conducting network transits through the myocardial tissue in different orientations, and with different characteristics. In order to validate that the observed fibers calculated from the diffusion data correspond to cardiac conducting fibers, we performed immunohistochemical staining on distinct regions of the myocardium.