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Narrow Band Imaging in ENT

HIGH DEFINITION NARROW BAND IMAGING – TECHNICAL PRINCIPLE

Narrow Band Imaging (NBI)

NBI is an optical image enhancement technology that improves the visibility of vessels and other tissues on the mucosal surface. Narrow-band illumination, which is strongly absorbed by hemoglobin and penetrates only the surface of tissues, is good for enhancing the contrast between the two. As a result, under narrow-band illumination, capillaries within the mucosal surface are displayed in brown on the monitor while veins in the submucosa are displayed in cyan.

Experience the Clinical Benefit of Narrow Band Imaging (NBI)

White light image

White light image

NBI image

NBI image

Prospective study proves advantages of NBI

Especially the combination of HDTV and NBI significantly improves positive and negative predictive rates.


NBI provides better definition of tumour staging and surgical margins in pre- and intraoperative settings. NBI is also valuable in post-operative setting due to its ability in early detection of persistences, recurrences, and metachronous tumours.

Prospective study proves advantages of NBI

Especially the combination of HDTV and NBI significantly improves positive and negative predictive rates.


NBI provides better definition of tumour staging and surgical margins in pre- and intraoperative settings. NBI is also valuable in post-operative setting due to its ability in early detection of persistences, recurrences, and metachronous tumours.

Penetration depth of light according to wavelength

Penetration depth of light according to wavelength

Narrow Band Imaging - Clinical Advantages:

The use of NBI enables superior detection of tumors in comparison to conventional white light imaging.
The improved visualization of capillary networks possible with NBI allows for analysis of tumor progression.
It is possible to identify small tumors using NBI, allowing for detection at an earlier stage.

* These advantages are proven by studies, which are shown on the following pages .

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NBI Abstracts

NBI Abstracts

Review of Clinical Evidence

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