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Diagnosis of Gastrointestinal Neoplasia by the Autofluorescence Videoendoscopy and Near-infrared Videoendoscopy Noriya Uedo 1 1Department of Gastrointestinal Oncology Osaka Medical Cancer for Cancer and Cardiovascular Diseases Keyword: 非可視光 , 自家蛍光内視鏡 , 赤外線内視鏡 , 大腸癌 , 胃癌 pp.1643-1649
Published Date 2004/11/25
DOI https://doi.org/10.11477/mf.1403100398
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 Although many attempts have been made so for to apply invisible lights (ultraviolet, near-infrared, laser, autofluorescence, etc...) in the diagnosis of esophago-gastrointestinal neoplasms, the approaches have been somewhat experimental. However, recent advanced technology brings marked improvement to some endoscopic imaging systems in both image quality and manipulability. A novel autofluorescence videoendoscopy system, AFI, can detect colon polyps as a well contrasted magenta or purple color in green normal mucosa and can differentiate neoplastic tumors from non-neoplastic polyps by their color tones. A dual wave near-infrared videoendoscopy system can show vessels underneath mucosal epithelium as cyan color after intravenous injection of indocyanine green. The endoscopic appearance of staining patterns in patients with depressed-type early gastric cancer with or without ulcerative change is useful for diagnosis of depth of cancer invasion. The new videoendoscopy systems using invisible light are now advanced enough for clinical application. In the 21st century, they will be able to establish diagnostic strategy for the digestive tract from the varying color patterns, shades and contrasts that the videoendoscopy systems are able to reveal.

 1) Department of Gastrointestinal Oncology Osaka Medical Cancer for Cancer and Cardiovascular Diseases, Osaka, Japan


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

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