In Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society
Narrow band imaging (NBI) is an optical digital enhancement method which allows observation of vascular and surface structures of colorectal lesions. Its usefulness in detection and diagnosis of colorectal polyps has been demonstrated in several clinical trials and the diagnostic algorithms have been simplified after the establishment of endoscopic classifications such as the Japan NBI expert team (JNET) classification. However, there were issues including lack of brightness in the earlier models, poor visibility under insufficient bowel preparation and incompatibility of magnifying endoscopes in certain endoscopic platforms, which had impeded NBI from becoming standardized globally. Nonetheless, NBI continued its evolution and the newest endoscopic platform launched in 2020 offers significantly brighter and detailed images. Enhanced visualization is expected to improve the detection of polyps while universal compatibility across all scopes including magnifying endoscopy will promote the global standardization of magnifying diagnosis. Therefore, knowledge related to magnifying colonoscopy will become essential as magnification becomes standardly equipped in the future models, although the advent of computer aided diagnosis and detection may greatly assist endoscopists to ensure quality of practice. Given that most endoscopic departments will be using both old and new models, it is important to understand how each generation of endoscopic platforms differ from each other. We reviewed the advances in the endoscopic platforms, artificial intelligence and evidence related to NBI essential for the next generation of endoscopic practice.
Teramoto Akira, Hamada Seiji, Ogino Banri, Yasuda Ichiro, Sano Yasushi
2022-Dec-08
adenoma detection rate, blue laser imaging, colonoscopy, image enhanced endoscopy, invasion depth diagnosis, narrow band imaging
