| Theme | Consensus Terminology in Endoscopic Imaging -- Focusing on Image-enhanced Endoscopy | |
|---|---|---|
| Title | Conventional Endoscopy (White Light) | |
| Publish Date | 2009/01 | |
| Author | Hirohumi Niwa | St. Marianna University School of Medicine |
| [ Summary ] | When conducting endoscopy with normal wave length light, small tungsten light bulbs, halogen lamps or xenon lamps are used. Xenon light is mainly composed of red light, containing little light in the short wavelengths, such as blue and green. On the other hand, halogen light contains a great deal of short wave length blue light. Thus, different types of light sources provide slightly different colors to the mucosa and produce different overall findings, since the rate of permeation into tissues and reflection differs depending on the spectrum produced. Today, videoscopes are mainly used for routine endoscopy. The principles of color videoscopic reproduction are explained, especially the differences between the frame sequential method and synchronous systems. The definition of the term "endoscopy by special light" has been over extended and misused. However, most of the treatments using "endoscopy with special light" should be termed, "endoscopy with conventional light." They should instead rather be termed "enhanced endoscopic images", which are processed through enhancement effects. |
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