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).
Design
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).
Setting
Japanese academic units.
Main Outcome Measurements
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.
Limitations
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. (Clinical trial registration number: UMIN000013770.)
Abbreviations:
BLI (blue laser imaging), FICE (flexible spectral imaging color enhancement), IEE (image-enhanced endoscopy), NBI (narrow-band imaging), WL (white light)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: April 04, 2015
Accepted:
January 12,
2015
Received:
June 10,
2014
Footnotes
DISCLOSURE: Dr Itoh received support from AstraZeneca Co, Ltd, Eisai Co, Ltd; Otsuka Pharmaceutical Co, Ltd; MSD KK; Dainippon Sumitomo Pharma Co, Ltd; Chugai Pharmaceutical Co, Ltd; FUJIFILM Medical Co, Ltd; Merck Serono Co; and Bristol-Myers KK. Dr Yagi received support from AstraZeneca Co, Ltd; Eisai Co, Ltd; Otsuka Pharmaceutical Co, Ltd; MSD KK; Dainippon Sumitomo Pharma Co, Ltd; Chugai Pharmaceutical Co, Ltd; Fujifilm Medical Co, Ltd; and Merck Serono Co. Dr Naito received support from Otsuka Pharmaceutical Co, Ltd (J132003243) and Takeda Pharmaceutical Co, Ltd (J132003379 and J132003384). All other authors disclosed no financial relationships relevant to this article.
If you would like to chat with an author of this article, you may contact Dr Yoshida at [email protected]
Identification
Copyright
© 2015 American Society for Gastrointestinal Endoscopy. Published by Elsevier Inc. All rights reserved.
