Narrow-band imaging optical chromocolonoscopy: Advantages and limitations

作     者：Fabian Emura Yutaka Saito Hiroaki Ikematsu 

作者机构：Advanced Digestive Endoscopy EmuraCenter LatinoAmerica & Emura Foundation for the Promotion of Cancer Research and Universidad de La Sabana Medical School Bogotá DC Colombia Endoscopy Division National Cancer Center Hospital Tokyo 104-0045 Japan Endoscopy Division National Cancer Center Hospital East Chiba 277-8577 Japan 

出 版 物：《World Journal of Gastroenterology》 (世界胃肠病学杂志（英文版）)

年 卷 期：2008年第14卷第31期

页      面：4867-4872页

核心收录：

学科分类：1002[医学-临床医学] 100201[医学-内科学(含：心血管病、血液病、呼吸系病、消化系病、内分泌与代谢病、肾病、风湿病、传染病)] 10[医学] 

基　　金：ACKNOWLEDGMENTS We are grateful to Dr. Kazuhiro Gono (Olympus Corp  Tokyo  Japan) for his contribution to the revision of the "Scientific Basis for NBI" section and to Christopher Dix for his assistance in the editing of this manuscript 

主　　题：Narrow-band imaging Colonoscopy Sequential system Non-sequential system Polyps Chromoendoscopy 

摘      要：Narrow-band imaging （NBI） is an innovative optical technology that modifies the center wavelength and bandwidth of an endoscope＇s light into narrow-band illumination of 415 ：1： 30 nm. NBI markedly improves capillary pattern contrast and is an in vivo method for visualizing microvessel morphological changes in superficial neoplastic lesions. The scientific basis for NBI is that short wavelength light falls within the hemoglobin absorption band, thereby facilitating clearer visualization of vascular structures. Several studies have reported advantages and limitations of NBI colonoscopy in the colorectum. One difficulty in evaluating results, however, has been nonstandardization of NBI systems （Sequential and nonsequential）. Utilization of NBI technology has been increasing worldwide, but accurate pit pattern analysis and sufficient skill in magnifying colonoscopy are basic fundamentals required for proficiency in NBI diagnosis of colorectal lesions. Modern optical technology without proper image interpretation wastes resources, confuses untrained endoscopists and delays interinstitutional validation studies. Training in the principles of ＂optical image-enhanced endoscopy＂ is needed to close the gap between technological advancements and their clinical usefulness. Currently available evidence indicates that NBI constitutes an effective and reliable alternative to chromocolonoscopy for in vivo visualization of vascular structures, but further study assessing reproducibility and effectiveness in the colorectum is ongoing at various medical centers.