方法

本研究采用53例连续的非颗粒扁平肿瘤。内镜下图像采用白光成像(WLI)、蓝光成像(BLI)-bright和LCI模式。对于每一个病灶，我们选择了通过WLI、 BLI-bright和LCI模式获得的各1张图像。 六名内镜医生解读这些图像。 通过使用以前报告的可见性等级，我们在1到4的等级上对可见性打分。

Methods: Fifty-three consecutive nongranular flat tumors were used in this study. Endoscopic images were acquired by white-light imaging (WLI), blue-laser imaging (BLI)-bright, and LCI modes. For each lesion, we selected 1 image each acquired by WLI, BLI-bright, and LCI modes. Six endoscopists interpreted the images. By using a previously reported visibility scale, we scored the visibility level on a scale of 1 to 4.

结果

可见性评分均值(±标准差)：WLI为2.74±1.08，BLI-bright为2.94±0.97，LCI为3.36±0.72。BLI-bright的得分显著高于白光组(P < .001)，而LCI的得分又高于BLI-bright (P< .001)。 当我们将专家与实习医生进行比较时，专家的相应得分分别为2.83±1.06、3.17±0.88、3.40±0.74，与所有内镜医师的得分趋势相似。对于实习医生而言， WLI(2.65±1.10)与BLI-bright(2.71±1.00)无显著性差异，但LCI(3.31±0.69)显著高于WLI和BLI-bright (P < 0.001)。 当只分析无蒂锯齿状腺瘤/息肉病变时，LCI显著高于其他2组。 

Results: The mean (± standard deviation) visibility scores were 2.74 ± 1.08 for WLI, 2.94 ± 0.97 for BLI-bright, and 3.36 ± 0.72 for LCI. The score was significantly higher for BLI-bright compared with WLI (P < .001) and again higher for LCI compared with BLI-bright (P < .001). When we compared between experts and trainees, the corresponding scores of experts were 2.83 ± 1.06, 3.17 ± 0.88, and 3.40 ± 0.74, with a tendency similar to the scores of all endoscopists. For the trainees, there was no difference between the scores for WLI (2.65 ± 1.10) and BLI-bright (2.71 ± 1.00), but the score for LCI (3.31 ± 0.69) was significantly higher than that for WLI or BLI-bright (P < .001). When only sessile serrated adenoma/polyp lesions were analyzed, LCI remained significantly higher than the other 2.