PMC9842778_01
Electroanatomical map of the left ventricle in Anteroposterior view
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Electroanatomical mapping revealed anterior, septal, and apical extensive scar areas in the left ventricle with multiple areas of late potentials [Figure 1].
Panel A: 12- Lead baseline ECG. Panel B: ventricular tachycardia morphology number 1. Panel C: ventricular tachycardia morphology number 2
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Catheter ablation was performed, and substrate modification as well as ablation of two ventricular tachycardia morphologies, was performed [Figure 2].
CT scan with the planning target volume highlighted in red. A: axial view. B: coronal view
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The 12-lead ECG, 4D CT, and electroanatomic mapping were used to determine the planning target volume (PTV), which consisted of the gross target volume (GTV), the internal target volume (ITV) as well as 2 mm as an additional safety using the treatment planning system (TPS) iPlan RT  (BrainLAB) [Figure 3].