摘要目的:评估联动成像模式(linked color imaging，LCI)提高结直肠息肉检出率，尤其是腺瘤检出率的有效性。方法:回顾性分析2018年5月—2019年3月入院接受LASEREO系统结肠镜LCI模式或普通白光(white light imaging，WLI)模式检查的患者，比较两种模式下结肠镜检查整体息肉检出率、腺瘤检出率、扁平息肉检出率、小息肉(≤5 mm)检出率及右半结肠息肉检出率的差异。用国际照明委员会(Commission Internationale de L′Eclairage，CIE)于1976年制定的L *a *b *颜色空间分析比较两种模式下腺瘤性息肉与周边黏膜的色差(ΔE)。 结果:LCI组患者整体息肉检出率，尤其是腺瘤检出率高于WLI组，差异有统计学意义(45.53%比32.83%， P＝0.038；53.65%比39.62%， P＝0.009)。LCI组腺瘤性息肉与周边黏膜的色差(ΔE)明显高于WLI组，差异有统计学意义(27.24±8.67比15.28±6.68， P<0.001)，且LCI组扁平息肉、小息肉及右半结肠息肉检出率均高于WLI组，差异有统计学意义(61.98%比47.17%， P＝0.005；60.94%比42.77%， P＝0.001；45.83%比32.70%， P＝0.012)。 结论:LCI能有效提高结直肠息肉检出率，尤其是腺瘤检出率，值得临床推广应用。

abstractsObjective:To evaluate the efficacy of linked color imaging (LCI) for the colorectal polyp detection, especially detection of adenoma.Methods:A retrospective analysis was conducted on the patients who underwent LCI or white light imaging(WLI) mode of LASEREO colonoscopy from May 2018 to March 2019.The differences of the detection rates in the global polyps, adenomatous polyps, flat polyps, small polyps (≤5 mm) and right-sided polyps under two modes were compared. Color differences between the adenomatous polyps and surrounding mucosa (ΔE) were examined under two modes, based on L *a *b * color space by the Commission Internationale de L′Eclairage in 1976. Results:The global polyp detection rate, especially adenoma detection rate, in LCI group was higher than that in WLI group(45.53% VS 32.83%, P=0.038; 53.65% VS 39.62%, P=0.009). The color difference(ΔE) between adenomatous polyps and surrounding mucosa in LCI group was significantly higher than that in WLI group(27.24±8.67 VS 15.28±6.68, P<0.001). In addition, the detection rates of flat polyps, small polyps and right-sided polyps in LCI group were higher than those in WLI group (61.98% VS 47.17%, P=0.005; 60.94% VS 42.77%, P=0.001; 45.83% VS 32.70%, P=0.012). Conclusion:LCI can effectively improve the colorectal polyp detection rate, especially adenoma detection rate, which is worthy of clinical application.