TY - JOUR
T1 - Appearance of enhanced tissue features in narrow-band endoscopic imaging
AU - Gono, Kazuhiro
AU - Obi, Takashi
AU - Yamaguchi, Masahiro
AU - Ohyama, Nagaaki
AU - Machida, Hirohisa
AU - Sano, Yasushi
AU - Yoshida, Shigeaki
AU - Hamamoto, Yasuo
AU - Endo, Takao
N1 - Funding Information:
This work was supported in part by a grant from the Japanese health, labor, and welfare ministry for Scientific Research Expenses for Health and Welfare Programs, the Foundation for the Promotion of Cancer Research, and the Second-Term Comprehensive 10-year Strategy for Cancer Control.
PY - 2004/5
Y1 - 2004/5
N2 - 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.
AB - 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.
KW - Endoscopic imaging
KW - Narrow-band illumination
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U2 - 10.1117/1.1695563
DO - 10.1117/1.1695563
M3 - Article
C2 - 15189095
AN - SCOPUS:2942718969
SN - 1083-3668
VL - 9
SP - 568
EP - 577
JO - Journal of Biomedical Optics
JF - Journal of Biomedical Optics
IS - 3
ER -
