背景和目的

内镜下识别早期巴雷特肿瘤是一个挑战。蓝光成像(BLI)和联动成像技术(LCI)或许可以帮助内镜医师鉴别肿瘤。我们的目的是评价非专家组内镜医师观察与评估巴雷特肿瘤时，比较BLI和LCI与单纯的白光内镜检查（WLE）的可见性。

Background and aims: Endoscopic recognition of early Barrett's neoplasia is challenging. Blue-light imaging (BLI) and linked-color imaging (LCI) may assist endoscopists in appreciation of neoplasia. Our aim was to evaluate BLI and LCI for visualization of Barrett's neoplasia in comparison with white-light endoscopy (WLE) alone, when assessed by nonexpert endoscopists.

方法

在这项基于网络的评估中，由3名内镜专家对30例Barrett肿瘤病变进行相应的WLE、BLI和LCI图像的划定，以确定基本事实。然后由来自3个国家的76名具有不同专业水平的非专家组内镜医师对这些图像进行评分和描述，分为4个独立的评估阶段，洗脱期为2周。评估结果如下:评估1，仅WLE;评估2，WLE + BLI;评估3，WLE + LCI;评估4，WLE + BLI + LCI。结果如下:(1)对宏观外观的评价和勾画病变的能力(视觉模拟评分[VAS]评分);(2)首选技术(顺序得分);(3)评估人员的描述表现与专家的真实情况有重叠。

Methods: In this web-based assessment, corresponding WLE, BLI, and LCI images of 30 neoplastic Barrett's lesions were delineated by 3 expert endoscopists to establish ground truth. These images were then scored and delineated by 76 nonexpert endoscopists from 3 countries and with different levels of expertise, in 4 separate assessment phases with a washout period of 2 weeks. Assessments were as follows: assessment 1, WLE only; assessment 2, WLE + BLI; assessment 3, WLE + LCI; assessment 4, WLE + BLI + LCI. The outcomes were (1) appreciation of macroscopic appearance and ability to delineate lesions (visual analog scale [VAS] scores); (2) preferred technique (ordinal scores); and (3) assessors' delineation performance in terms of overlap with expert ground truth.