Direct Clinical Effects of Cardiac Radioablation in the Treatment of a Patient With Therapy-Refractory Ventricular Tachycardia Storm

Figures

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  Figure 1. The anatomic scar and VT exit sites determining the target for cardiac radioablation visualized by the American Heart Association Segmented Model, and the angulated short axis-view of the heart and the target and radiation therapy dose distribution. Abbreviation: VT, ventricular tachycardia.

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  Figure 2. Number of VT episodes per day (left vertical axis) and the doses of antiarrhythmic medication per day in mg (right vertical axis). The red square indicates admission into the intensive care unit. The vertical gray dotted line indicates the moment of cardiac radioablation treatment. Abbreviations: IV, intravenous; VT, ventricular tachycardia.

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  Figure 3. Representative transversal slices of the matched [18F]FDG-PET/CT scan and the planning CT scan with the isodose lines. In green, the area receiving at least 25 Gy (100%); in red, 12.5 Gy (50%); and in blue, 5 Gy (20%) Increased metabolic activity is also seen in parts of the heart receiving lower radiation doses.