الفهرس 
Review of literatureOnly 14 pages are availabe for public view
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Abstract
NBI is an endoscopic imaging technology, which results in the good contrast of surface structures and vascular architecture in the superficial mucosa using blue (400–430 nm) and green (535–565 nm) narrow-band light. These wavelengths are close to the light absorption peaks of hemoglobin.
NBI with magnification endoscopy can provide a microscopic image of the mucosal and vascular structures, which are used for the detection of different types of Gastritis.
Acetic acid is a weak acid that breaks the disulfide bonds of glycoproteins of the mucus layer, causing reversible denaturation of the intracellular cytoplasmic proteins. In the columnar epithelium, acetic acid leads to the enhancement of the mucosal architecture and pit-pattern. Acetic acid combined with magnification endoscopy or indigo carmine has been used to diagnose different types of Gastritis.