Volume 17, Issue 3 pp. 235-240

NEWLY DEVELOPED AUTOFLUORESCENCE IMAGING VIDEOSCOPE SYSTEM FOR THE DETECTION OF COLONIC NEOPLASMS

Noritomo Nakaniwa

Noritomo Nakaniwa

Koshigaya Municipal Hospital, Koshigaya, Saitama and

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Akihiro Namihisa

Akihiro Namihisa

Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan

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Tatsuo Ogihara

Tatsuo Ogihara

Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan

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Akimitsu Ohkawa

Akimitsu Ohkawa

Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan

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Satoshi Abe

Satoshi Abe

Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan

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Akihito Nagahara

Akihito Nagahara

Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan

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Osamu Kobayashi

Osamu Kobayashi

Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan

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Jun Sasaki

Jun Sasaki

Koshigaya Municipal Hospital, Koshigaya, Saitama and

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Nobuhiro Sato

Corresponding Author

Nobuhiro Sato

Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan

Nobuhiro Sato, Department of Gastroenterology, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan. Email: [email protected]Search for more papers by this author
First published: 09 June 2005
Citations: 22

This paper was presented at the meeting of the 67th Japan Gastroenterological Endoscopy Society.

Abstract

Background: Previously, we reported that most gastrointestinal tumors could be distinguished with the Light-Induced Fluorescence Endoscopy for GastroIntestine system (LIFE-GI system) using a fiberscope. However, the quality of the fiberscopic images was inferior compared with videoscopic images. Therefore, we developed a new Auto-Fluorescence Imaging (AFI) videoscope system (manufactured by Olympus Corp.).

Methods: We evaluated the clinical usefulness of the AFI videoscope system for the detection of colonic neoplasms. Using this system, we observed 168 colonic polyps.

Results: Images obtained by AFI provided better brightness than autofluorescence fiberscopic images and lesion margins were clearly evident. It demonstrated excellent recognition capability to a small lesion that was difficult to be detected by conventional observation. Sensitivity was 89% and specificity 81%, with specificity higher than that of the autofluorescence fiberscopic images.

Conclusions: This newly developed AFI videoscope system will be useful for the detection of colonic neoplasms.

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