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Ventricular tachycardia (VT) in the absence of structural heart disease had a good prognosis.Radiofrequency ablation (RFA) is the preferred treatment in most patients.Some patients may need special imaging technique such as cardiac magnetic resonance (CMR) to demonstrate the presence of structural abnormality of the right ventricle even in patients with normal echocardiogram.Distinguishing from right ventricular dysplasia may be essential since the prognosis is different.Patients with symptomatic premature ventricular contraction may be treated with medication such as beta-blocker.Response rate of medical treatment is up to 50%.However, radiofrequency (RF) ablation is preferred in patients with serious symptoms such as syncope or refractory to medication.Although some unusual sites have been reported, successful rate of RF ablation is excellent with small chance of recurrence.Follow-up data showed that after RF ablation most patients are still doing well with a significant improvement of quality of life.Long-term follow up data also showed an excellent outcome after ablation.Certain ECG characteristics may be used to locate the site of the tachycardia and some ECG features may guide clinicians for the chance of successful procedure and the chance of recurrence.