In some embodiments, the disclosed subject matter provides a method of identifying the source of arrhythmia, e.g. reentrant ventricular tachycardia, in a patient. In other embodiments, the disclosed subject matter provides a method for treating or preventing reentrant ventricular tachycardia in a patient. In still other embodiments, the disclosed subject matter provides systems for identifying the location of a candidate ablation site in a patient. In some embodiments, the patient has suffered from a myocardial infarction or has undergone structural remodeling of the heart caused by, e.g., cardiac fibrosis or the presence of dense trebeculation, resulting in nonviable areas with border zones (BZ).
