Successful Noninvasive 12-Lead ECG Mapping-Guided Radiotherapy of Inaccessible Ventricular Tachycardia Substrate Due to Mechanical Valves

Figures

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  Figure 1. Computational 12-Lead Electrocardiogram Mapping of VT Noninvasive computerized electrocardiogram mapping localizing ventricular tachycardia 1 (VT1) to the left ventricular outflow tract below the aortic valve and VT2 to the aortomitral continuity.

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  Figure 2. 3-Dimensional Reconstruction of Mechanical Valves and Final VT Target (Top) A 3-dimensional reconstruction of the patient’s cardiac computed tomography in maximal intensity projection shows clear delineation of the radiopaque mechanical aortic and mitral valves, from which the 2 ventricular tachycardias (VTs) originated. (Bottom) Final radiotherapy targeting the 2 VT originating sites at the left ventricular outflow tract and aortomitral continuity in a coronal view of the simulation computed tomography.