Navicam for Detection of Barrett's Esophagus

Inclusion Criteria * Adults greater than or equal to 22 years of age with or without Barrett's Esophagus * All Patients: o Have had an endoscopy within 1 year of baseline enrollment * Patients with Barrett's Esophagus: * Presence of at least 1cm of salmon colored mucosa with corresponding biopsies showing intestinal metaplasia who are treatment naïve and undergoing surveillance Or * Chronic Gastro Esophageal Reflux Disease (GERD) patients with at least 3 additional risk factors that meet Barrett's Esophagus screening criteria per latest clinical guidelines Exclusion Criteria * Inability to comprehend or read the consent form * Have an oropharynx, esophageal, or gastro-esophageal tumor * Ongoing symptoms of dysphagia * Presence of active clinically significant stricture * History of stricture requiring dilation * Presence of pacemaker or implanted cardiac defibrillator * History of esophageal surgery with the exception of fundoplication * Pregnancy * History of surgery or obstructive process of the small bowel * BMI \> 38