Automatic identification of VT substrate in the era of ultra-high-density mapping: Do Humans or Machines emerge victorious?Richard G. Bennett, BSc, MBChB,a Timothy G. Campbell, BSc,a Saurabh Kumar, BSc(Med)/MBBS, PhDaaDepartment of Cardiology, Westmead Hospital, Westmead Applied Research Centre, University of Sydney, Australia.Correspondence: Associate Professor Saurabh Kumar, Department of Cardiology, Westmead Hospital, Westmead Applied Research Centre, University of Sydney, Darcy Road, Westmead, New South Wales, Australia, 2145. Phone +612 8890 8140; Fax: +612 8890 8323; email: saurabh.kumar@sydney.edu.auDisclosures: Timothy Campbell has received speakers’ honoraria for Biosense Webster, Inc. in the last 12 monthsFunding: Dr Saurabh Kumar is supported by the NSW Early-mid Career FellowshipKeywords: Ventricular tachycardia, local abnormal ventricular activities, electroanatomic mapping, catheter ablation, structural heart disease