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Ventricular tachycardia (VT) generally results from underlying heart disease and causes significant morbidity and mortality. Implantable cardioverter-defibrillators (ICDs) can prevent sudden death from ventricular arrhythmias, but the pain and potentially adverse results of ICD shocks have led clinicians to try VT ablation or adjunctive antiarrhythmic agents. VT ablation strategies have expanded from endocardial-only to endocardial plus epicardial and even to induction of a controlled myocardial infarction in the area of VT origin. Despite these techniques, cure or even reduction of VT is often elusive. Researchers have now targeted VT with stereotactic body radiation therapy, an ablative technique frequently utilized in oncology, in five p…