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Fig. 6 | BMC Cardiovascular Disorders

Fig. 6

From: Study protocol: MyoFit46—the cardiac sub-study of the MRC National Survey of Health and Development

Fig. 6

ECGI analysis workflow. A ECGI data is collected by g.Recorder software. B CMR image showing one transverse slice of the HASTE used to segment the epicardium. Note the fiducial MRI markers (white) situated on the anterior and posterior torso. C Ventricular segmentation of the same participant’s HASTE data, showing heart torso geometry and markers (Beekley medical, Bristol, Connecticut) following volume rendering, landmark localization and segmentation in Amira software (ThermoFisher, MA, USA, version 2020.3). D Signal averaging is performed using in house, customized software (Matlab, MathWorks, Natick, MA) and unipolar electrograms are then combined with Amira software heart torso geometry by solving the inverse problem of ECGI in collaboration with the Rudi laboratory. E Activation time isochrone maps in disease highlighting an area of fractionation corresponding to an area of LGE/scar in the mid anteroseptum of the left ventricle. EGM, electrogram. Other abbreviations as in Figs. 1, 2 and 3

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