This study is collecting data on patients who are having an ablation procedure to correct an irregular heart beat called an arrhythmia. During this procedure an electrical map is made so your doctor can see where the irregular signals are located in your heart. The electrical mapping system called AcQMap®. After creating the electrical map your doctor will perform an ablation, which is a procedure where the irregular signals are burned with an ablation catheter. The catheter, a long, thin tube that enters at an artery in your groin area and is directed to your heart. The end of the catheter is able to burn tissue on contact. Your physician will use this catheter to burn the areas in your heart where the irregular heart beats start. This study will collect data from just before your ablation up to 3 years.

The purpose of the study is to show that the FlexAbility™ SE Ablation Catheter is safe and effective in reducing the number of Ventricular Tachycardia (VT) episodes in patients who continue to experience VT despite taking antiarrhythmic medications (medicines to prevent abnormal heart rhythms), or who are unable to take antiarrhythmic medications. Subject should be at least 18 years old. The entire duration of the study will be one year from the ablation procedure and consists of four follow up visits after the ablation procedure.