What kind of light is used in endoscopy?

Light Used in Endoscopy

In endoscopy, White Light is predominantly used to illuminate the internal parts of the human body. This light is similar to natural daylight and is capable of rendering colors accurately, which is crucial for accurate diagnosis and treatment. However, advancements in endoscopic technology have introduced the use of specialized light types to enhance visualization and diagnostic capabilities.

Narrow Band Imaging (NBI) is one such advancement. NBI uses filters to narrow the bandwidth of the light, emphasizing certain colors or wavelengths. This enhances the contrast of mucosal surfaces and blood vessels, improving the detection of abnormalities such as tumors or lesions.

Fluorescence Imaging is another innovative technique used in endoscopy. It involves the use of specific light wavelengths to excite fluorescent dyes that have been introduced into the body. The dyes emit light at different wavelengths, highlighting areas of interest such as cancerous cells or tissues.

Additionally, Ultraviolet (UV) Light and Infrared (IR) Light are sometimes used for specialized diagnostic purposes. UV light can help in identifying bacterial infections, while IR light can be used for deeper tissue imaging, providing information beyond the surface visible under white light.

Overall, the choice of light in endoscopy depends on the specific requirements of the examination or procedure. The development of new lighting techniques continues to enhance the capabilities of endoscopic procedures, offering better visualization, improved accuracy, and the potential for early detection of diseases.