随着内镜技术的不断发展,近年来内镜窄带成像技术(NBI)逐渐在临床上受到重视,并被广泛应用到消化道肿瘤的诊断方面,该技术可以使光照深度限定在组织表层,因此对黏膜层和黏膜下层的组织可以比较清晰地进行成像显示[1],得益于此,临床上常将其和放大内镜进行结合,以期发现普通内镜不能发现的早期癌变部位,为早期癌症的治疗赢得宝贵的时间,同时结合现代病理技术,可以进行精确活检,提高诊断 With the continuous development of endoscopic techniques, narrow-band endoscopic imaging (NBI) has gained clinical attention in recent years and is widely used in the diagnosis of gastrointestinal tumors. This technique can limit the depth of illumination to the surface of the tissue and therefore On the mucosa and submucosa of the tissue can be relatively clear image display [1], thanks to this, clinically often combined with magnifying endoscopy in order to find the common endoscopy can not be found in early cancer sites, early The treatment of cancer has won valuable time, combined with modern pathology to allow accurate biopsy and improve diagnosis