title: Improvement in the visibility of colorectal polyps by using blue laser imaging (with video).
abstract: BACKGROUND
  Fujifilm developed blue laser imaging (BLI) via a laser light source with a narrow-band light observation function. It has a brighter BLI bright mode for tumor detection.
  
  
  OBJECTIVE
  To investigate whether the BLI bright mode can improve the visibility of colorectal polyps compared with white light (WL).
  
  
  METHODS
  We studied 100 colorectal polyps (protruding, 42; flat, 58; size, 2-20 mm) and recorded videos of the polyps by using the BLI bright mode and WL at Kyoto Prefectural University of Medicine and Fukuoka Chikushi University Hospital. The videos were evaluated by 4 expert endoscopists and 4 nonexperts. Each endoscopist evaluated the videos in a randomized order. Each polyp was assigned a visibility score from 4 (excellent visibility) to 1 (poor visibility).
  
  
  METHODS
  Japanese academic units.
  
  
  METHODS
  The visibility scores in each mode and their relationship to the clinical characteristics were analyzed.
  
  
  RESULTS
  The mean visibility scores of the BLI bright mode were significantly higher than those of WL for both experts and nonexperts (experts, 3.10 ± 0.95 vs 2.90 ± 1.09; P = .00013; nonexperts, 3.04 ± 0.94 vs 2.78 ± 1.03; P < .0001). For all nonexperts, the visibility scores of the BLI bright mode were significantly higher than those of WL; however, these scores were significantly higher in only 2 experts. For experts, the mean visibility scores of the BLI bright mode was significantly higher than those of WL for flat polyps, neoplastic polyps, and polyps located on the left side of the colon and the rectum.
  
  
  CONCLUSIONS
  Small sample size and review of videos.
  
  
  CONCLUSIONS
  Our study showed that polyps were more easily visible with the BLI bright mode compared with WL. (
  
  
  BACKGROUND
  UMIN000013770.).
authors: Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
authors: Naohisa
authors: N
authors: Yoshida
authors: Department of Gastroenterology, Fukuoka University Chikushi Hospital, Fukuoka, Japan.
authors: Takashi
authors: T
authors: Hisabe
authors: Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
authors: Ryohei
authors: R
authors: Hirose
authors: Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
authors: Kiyoshi
authors: K
authors: Ogiso
authors: Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
authors: Yutaka
authors: Y
authors: Inada
authors: Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
authors: Hideyuki
authors: H
authors: Konishi
authors: Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
authors: Nobuaki
authors: N
authors: Yagi
authors: Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
authors: Yuji
authors: Y
authors: Naito
authors: Department of Gastroenterology, Fukuoka University Chikushi Hospital, Fukuoka, Japan.
authors: Yoshiaki
authors: Y
authors: Aomi
authors: Department of Gastroenterology, Fukuoka University Chikushi Hospital, Fukuoka, Japan.
authors: Kazeo
authors: K
authors: Ninomiya
authors: Department of Gastroenterology, Fukuoka University Chikushi Hospital, Fukuoka, Japan.
authors: Go
authors: G
authors: Ikezono
authors: Department of Gastroenterology, Fukuoka University Chikushi Hospital, Fukuoka, Japan.
authors: Masaaki
authors: M
authors: Terasawa
authors: Department of Gastroenterology, Fukuoka University Chikushi Hospital, Fukuoka, Japan.
authors: Kenshi
authors: K
authors: Yao
authors: Department of Gastroenterology, Fukuoka University Chikushi Hospital, Fukuoka, Japan.
authors: Toshiyuki
authors: T
authors: Matsui
authors: Department of Pathology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
authors: Akio
authors: A
authors: Yanagisawa
authors: Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
authors: Yoshito
authors: Y
authors: Itoh
mesh_terms: D000236:Adenoma / Q000175:diagnosis*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D003111:Colonic Polyps / Q000175:diagnosis*; D003113:Colonoscopy / Q000379:methods; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D062048:Narrow Band Imaging / Q000379:methods*; D010865:Pilot Projects; D011446:Prospective Studies; D012002:Rectal Diseases / Q000175:diagnosis*; D014741:Video Recording