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An Attempt to Analyze Color Wavelengths with an Electronic Endoscope
Author(s) -
KATSU Kenichi
Publication year - 1995
Publication title -
digestive endoscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.5
H-Index - 56
eISSN - 1443-1661
pISSN - 0915-5635
DOI - 10.1111/j.1443-1661.1995.tb00151.x
Subject(s) - endoscope , medicine , atrophic gastritis , gastric mucosa , gastric carcinoma , endoscopy , cancer , gastroenterology , digital image analysis , stomach , gastritis , pathology , radiology , computer vision , computer science
We attempted to measure the dominant wavelengths of gastric mucosal lesions and to extract and present color differences of the lesions in image form, by converting spectroscopic visual signals (composed of red, green and blue components) obtained from an electronic endoscope into digital color files. The dominant wavelength, as measured from signals input without gamma correction, was significantly shorter in gastric mucosa affected by atrophic gastritis and type lie early gastric cancer than in normal mucosa. This analysis revealed a significant difference in dominant wavelengths between the endoscopically normal mucosa of the stomach and that found to have been affected by early gastric carcinoma and atrophic gastritis. Color difference extraction allowed us to make a morphological characterization of the surface of type lie early gastric cancer, although this was possible in only one case. The results of this study suggest the diagnostic value of digital representation of the mucosal surface features provided by endoscopy. It is suggested that, in the future, analog endoscopic diagnosis will be replaced by digital endoscopic diagnosis and computerized endoscopic diagnosis.