| Theme |
Narrow Band Imaging (NBI) / Fuji Intelligent Color Enhancement (FICE) and pit pattern in colon and rectum |
| Title |
Principles of NBI system |
| Author |
Hirohisa Machida |
Department of Gastroenterology, Osaka City University Graduate School of Medicine |
| Author |
Kenji Watanabe |
Department of Gastroenterology, Osaka City University Graduate School of Medicine |
| Author |
Yasuhiro Fujiwara |
Department of Gastroenterology, Osaka City University Graduate School of Medicine |
| Author |
Tetsuo Arakawa |
Department of Gastroenterology, Osaka City University Graduate School of Medicine |
| [ Summary ] |
Narrow Band Imaging (NBI) technology is a type of optical image enhancing, comprised of modified optical filters used in the light source of a video-endoscope system. NBI allows for the production of contrast images of capillary patterns of the superficial layer to be evident. Subsequently, recognizing lesions becomes easier, appearing as “brownish area”, since the permeable image of the vessels is interrupted. On the normal mucosa, a regular hexagonal or honeycomb-like pattern is found around a crypt. However, in neoplastic lesions, angiogenesis induces vessel growth and the disruption, increased vessel density. Recently, Capillary pattern classification was proposed, which is based on the morphology of vessels. This classification is related to not only the histology of lesions but the depth of carcinomal invasion. |