NBI

Tuesday 01 April 2008, Branislav Kunčak, M. D.

NBI (Narrow band imaging) is a novel optical technique in digestive endoscopy, which is also called "optical chromoendoscopy". NBI is based on the principle that the depth of the light penetration depends on its vawelength. Light of a short vawelength (blue and green) penetrates very little, improving mucosal surface imaging. Endoscopes with narrow band imaging capabilities allows the physician to switch between narrow band imaging and standard full spectrum white light modes. NBI may improve the detection of metaplastic Barrett´s mucosa and associated dysplastic mucosa.

Bigger image Endoscopy

Fig. 1

Barrett´s esophagus (NBI mode). Prograde view.

Bigger image Endoscopy

Fig. 2

Barrett´s esophagus (NBI mode). Retrograde view.

Bigger image Endoscopy

Fig. 3

Short segment of Barrett´s esophagus. White light mode.

Bigger image Endoscopy

Fig. 4

Short segment of Barrett´s esophagus. NBI mode.

Keywords: Barrett´s esophagus, NBI, Narrow Band Imaging, metaplasia, dysplasia, esophagus