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The functional imaging of the mucosal hemodynamics using electronic endoscopy

, : The functional imaging of the mucosal hemodynamics using electronic endoscopy. Gastroenterological Endoscopy 29(3): 481-485

Recent advances in image processing techniques are carrying the new era of endoscopic diagnosis. An electronic endoscope is one of the newest instrument to contribute toward the progress in endoscopy. In this paper, we reported the usefulness of the electronic endoscopy in the analysis of gastric mucosal hemodynamics. The optical intensity of red or green obtained form the electronic endoscopic image depended on the distance from the object to the lens and the reflectance spectra of hemoglobin. Therefore, the index of hemoglobin concentration was extracted from the endoscopic image by processing of the ratio of red to green. This index had a good correlation with the concentration of mucosal hemoglobin measured by in vivo organ reflectance spectrophotometry. Using this method, the blood distribution of the gastric mucosa can be analyzed and displayed in animals. The electric image of this endoscope suited the image processer. We concluded that the functional imaging using electronic endoscope would be important to the progress in endoscopic diagnosis.

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