Radiation Oncology/Arrythmia

• SBRT for cardiac arrhythmias also termed stereotactic arrhythmia radioablation (STAR)

• Stereotactic radioablation has been used to safely and effectively treat a limited number of patients with malignant arrhythmias:

(1) Ventricular tachycardia (VT)

(2) Atrial fibrillation (AF)

• Unlike catheter-directed radiofrequency or cryoablation, in which tissue destruction is effected by thermal injury, radiotherapy uses gamma-rays or x-rays directed in high doses (typically 25–30 Gy) to a three-dimensional volume of target tissue