Narrow Band Imaging (NBI) of the Digestive Tract

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added:
13 years ago
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5575
specialty:
Otorhinolaryngology

Case description

NBI is an optical imaging technology. It works by altering the white light source to consist of specific wavelength bands, which take advantage of the scattering and absorption properties of human tissues. Because the gastrointestinal tract is mainly composed of blood vessels and mucosa, narrow band illumination, which is strongly absorbed by hemoglobin and penetrates only the surface of tissues, is ideal for enhancing the contrast between the two. As a result, under narrow band illumination, capillaries on the mucosal surface are displayed in brown and veins in the submucosa are displayed in cyan on the monitor.

tags: NBI hemoglobin digestive tract mucosa

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