TitleThe interventricular double potentials with ventricular tachycardia in non ischemic cardiomyopathy: What is the mechanism?Shingo Yamamoto, M.D., Tatsuya Hayashi, M.D., Yusuke Ugata, M.D., Hideo Fujita, M.D., PH.D.Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, Saitama, JapanDisclosures:No conflicts of interest related to this topicKeywords:ventricular tachycardia, substrate mapping, non ischemic cardiomyopathy, dilated cardiomyopathy, fragment potential,Fundings:NoneTotal words counts:829Corresponding author: Shingo YamamotoDivision of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan.1-847, Amanuma, Omiya-ku, Saitama, Japan 330-8503Tel: +81-48-647-2111Fax: +81-48-647-5150E-mail: y-shingo@jichi.ac.jp