方法

根据京都胃炎分类，使用白光、LCI和BLI-bright模式从261名患者中获取1092幅内镜图像。这些图像包括弥漫性发红、点状发红、地图样发红、斑块状发红、嵴状发红、肠化生和萎缩性边界（每个症状52个病例），由10名专家和10名实习内镜医师进行回顾性评估。医生对可见性评估如下：5（提高）、4（稍提高）、3（等效）、2（稍降低）、1（降低）。根据总分评估可见性。同时还评估了评分员间可信度。

Methods: WLI, LCI and BLI bright mode (BLI-bright) were used to obtain 1,092 endoscopic images from 261 patients according to the Kyoto Classification of Gastritis. Images were evaluated retrospectively by 10 experts and 10 trainee endoscopists and included diffuse redness, spotty redness, map-like redness, patchy redness, red streaks, intestinal metaplasia, and an atrophic border (52 cases for each finding, respectively). Physicians assessed visibility as follows: 5 (improved), 4 (somewhat improved), 3 (equivalent), 2 (somewhat decreased), and 1 (decreased). Visibility was assessed from totaled scores. The inter-rater reliability (intraclass correlation coefficient) was also evaluated. 

结果

所有内镜医师都报告跟白光相比，LCI能提高可见性：弥漫性发红55.8%；点状发红38.5%；地图样发红57.7%；斑块状发红40.4%；嵴状发红53.8%；肠化生LCI 42.3%，BLI-bright 80.8%；萎缩性边界46.2%。跟白光比，所有内镜医师的LCI评分员间可信度为0.73-0.87。

Results: Compared with WLI, all endoscopists reported improved visibility with LCI: 55.8% for diffuse redness; LCI: 38.5% for spotty redness; LCI: 57.7% for map-like redness; LCI: 40.4% for patchy redness; LCI: 53.8% for red streaks; LCI: 42.3% and BLI-bright: 80.8% for intestinal metaplasia; LCI: 46.2% for an atrophic border. For all endoscopists, the inter-rater reliabilities of LCI compared to WLI were 0.73–0.87.