Diagnosis of Gastritis, H. Pylori Infection and Atrophic Gastritis in Dyspeptic Patients

evaluation of the gastric mucosa with high-definition white light endoscopy (EG-29i10 gastroscope and EPKi7010 video processor). The endoscopy images will be seen on a 27inch, flat panel, high definition LCD monitor (Radiance™ ultraSC-WU27-G1520 model) by

Subject will be evaluated by upper endoscopy with the OE System (EPK-i7010 HD Video Processor and MagniView™ EG-2990Zi Video Gastroscope) with intravenous sedation in a standardized manner. This technique involves the use of a distal black rubber hood (OE-A58; Pentax) at the tip of the endoscope, to fix the distance between the tip of the endoscope and the gastric mucosa at 2 mm. The OE System will be used in mode 1 and mode 2 without optical magnification, to obtain an overview of the gastric body and identify any gross changes in the mucosa, then optical magnification will be implemented.