Linked color imaging improves the visibility of various featured colorectal polyps in an endoscopist's visibility and color difference value

Yoshida N 1 , Naito Y 2 , Yasuda R 2 , Murakami T 2 , Hirose R 2 , Ogiso K 2 Show all authors , Inada Y 2 , Dohi O 2 , Kamada K 2 , Uchiyama K 2 , Handa O 2 , Konishi H 2 , Rani RA 3 , Kishimoto M 4 , Konishi E 4 , Itoh Y 2

Affiliations 

  • 1 Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan. naohisa@koto.kpu-m.ac.jp
  • 2 Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
  • 3 Gastroenterology Unit, Faculty of Medicine, Universiti Teknologi MARA, Selangor, Malaysia
  • 4 Department of Surgical Pathology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
Int J Colorectal Dis, 2017 Sep;32(9):1253-1260.
PMID: 28725959 DOI: 10.1007/s00384-017-2855-z

Abstract

PURPOSE: Linked color imaging (LCI) by laser endoscopy is a novel narrow band light observation. In this study, we analyzed the efficacy of LCI for improving the various featured colorectal polyp's visibility utilizing a subjective endoscopist's visibility scoring and objective color difference (CD) value.

METHODS: We retrospectively reviewed two pictures both with white light (WL) and LCI for 54 consecutive neoplastic polyps 2-20 mm in size. All pictures were evaluated by four endoscopists according to a published polyp visibility score from four (excellent visibility) to one (poor visibility). Additionally, we calculated CD value between each polyp and surrounding mucosa in LCI and WL using an original software.

RESULTS: The mean polyp visibility scores of LCI (3.11 ± 1.05) were significantly higher than those of WL (2.50 ± 1.09, P 

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