Document Detail

Appearance of enhanced tissue features in narrow-band endoscopic imaging.
MedLine Citation:
PMID:  15189095     Owner:  NLM     Status:  MEDLINE    
This study was performed to examine the usefulness of medical endoscopic imaging utilizing narrow-band illumination. The contrast between the vascular pattern and the adjacent mucosa of the underside of the human tongue was measured using five narrow-band illuminations and three broadband illuminations. The results demonstrate that the pathological features of a vascular pattern are dependent on the center wavelength and the bandwidth of illumination. By utilizing narrow-band illumination of 415+/-30 nm, the contrast of the capillary pattern in the superficial layer was markedly improved. This is an important benefit that is difficult to obtain with ordinary broadband illumination. The appearances of capillary patterns on color images were evaluated for three sets of filters. The narrow, band imaging (NBI) filter set (415+/-30 nm, 445+/-30 nm, 500+/-30 nm) was selected to achieve the preferred appearance of the vascular patterns for clinical tests. The results of clinical tests in colonoscopy and esophagoscopy indicated that NBI will be useful as a supporting method for observation of the endoscopic findings of early cancer.
Kazuhiro Gono; Takashi Obi; Masahiro Yamaguchi; Nagaaki Ohyama; Hirohisa Machida; Yasushi Sano; Shigeaki Yoshida; Yasuo Hamamoto; Takao Endo
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Publication Detail:
Type:  Comparative Study; Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of biomedical optics     Volume:  9     ISSN:  1083-3668     ISO Abbreviation:  J Biomed Opt     Publication Date:    2004 May-Jun
Date Detail:
Created Date:  2004-06-10     Completed Date:  2004-07-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9605853     Medline TA:  J Biomed Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  568-77     Citation Subset:  IM    
Copyright Information:
(c) 2004 Society of Photo-Optical Instrumentation Engineers.
Olympus Co., Ishikawa-cho, Hachioji-shi, Tokyo 192-8507, Japan.
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MeSH Terms
Barrett Esophagus / pathology*
Colonoscopy / methods
Colorimetry / methods*
Endoscopy / methods*
Esophagoscopy / methods
Image Enhancement / methods*
Mouth Mucosa / cytology*
Reproducibility of Results
Sensitivity and Specificity
Spectrum Analysis / methods*
Tongue / blood supply*,  cytology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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