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

Authors


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

Nobuhiro Sato, Department of Gastroenterology, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan. Email: nsato@med.juntendo.ac.jp

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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