A Study of Intracardiac Ultrasound With the NUVISION NAV Ultrasound Catheter

Inclusion Criteria: * Diagnosed with and candidate for clinically-indicated cardiac ablation procedure for the management of ventricular tachycardia, premature ventricular complex, scar-related atrial tachycardia or atrial fibrillation (participants having undergone a previous ablation procedure may be included) * Signed participants Informed Consent Form (ICF) * Able and willing to comply with all pre-, post-, and follow-up testing and requirements Exclusion Criteria: * Structural heart defect which can only be repaired by cardiac surgery * Pericarditis within 6 months * Left ventricular ejection fraction (LVEF) less than or equal to (\<=) 25 percent (%) for ventricular tachycardia (VT) participants * LVEF \<= 40% for participants with atrial arrhythmia * History of chronic gastro-intestinal medical problems involving the esophagus, stomach and/or untreated acid reflux * History of abnormal bleeding and/or clotting disorder * Clinically significant infection or sepsis * History of stroke or transient ischemic attack (TIA) within the past 6 months of enrollment * Uncontrolled heart failure or New York Heart Association (NYHA) function class IV * Implanted with a pacemaker or intracardiac cardiac defibrillator within the past 6 weeks (42 days) * Implanted with a mechanical valve * Diagnosed atrial or ventricular myxoma, interatrial baffle or patch, tumor or other abnormality that precludes catheter introduction or manipulation * Any of the following within 6 months of enrol…