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Development and Usefulness of Extra-wide-angle-view Colonoscope Toshio Uraoka 1,2 , Shinji Tanaka 3 , Takayuki Matsumoto 4 , Yutaka Saito 5 , Shoichi Saito 6 , Takahisa Matsuda 5,7 , Shiro Oka 3 , Tomohiko Moriyama 8 , Hisao Tajiri 9 , Haruhiko Ogata 10 , Naohisa Yahagi 2 , Hideki Ishikawa 11 1Department of Gastroenterology, National Hospital Organization Tokyo Medical Center, Tokyo 2Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University, Tokyo 3Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan 4Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Morioka, Japan 5Endoscopy Division, National Cancer Center Hospital, Tokyo 6Department of Gastroenterology, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo 7Cancer Screening Center, National Cancer Center Hospital, Tokyo 8Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan 9Department of Innovative Interventional Endoscopy Research, Jikei University School of Medicine, Tokyo 10Center for Diagnostic and Therapeutic Endoscopy, School of Medicine, Keio University, Tokyo 11Department of Molecular-Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan Keyword: 大腸内視鏡 , 広角内視鏡 , ADR , 大腸腺腫 , 大腸癌 pp.944-948
Published Date 2016/6/25
DOI https://doi.org/10.11477/mf.1403200670
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 Polypectomy has been accepted for adenomatous lesions in the colorectum, being associated with a reduction in the incidence and mortality of colorectal cancer. However, ADR(adenoma detection rate)depends on endoscopic skill and the quality of endoscopic images. ADR is a good quality measurement of colonoscopy. For improving its quality measurement, several novel colonoscopes have recently been developed with a view to achieve a wider angle field. Olympus has been developing the Extra-wide-angle-view colonoscope, which has two lenses:a lateral-backward view lens and a standard-angle, forward-view lens. Two views from both lenses are generated simultaneously and displayed on video monitors as a single image. This novel colonoscope has the potential to reduce the number of missed lesions where located behind haustral folds, flexures, or rectal valves, resulting in improving ADR.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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