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Journal ArticleDOI

Appearance of enhanced tissue features in narrow-band endoscopic imaging.

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TLDR
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.
Abstract
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 demon- strate that the pathological features of a vascular pattern are depen- dent on the center wavelength and the bandwidth of illumination. By utilizing narrow-band illumination of 415630 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 broad- band illumination. The appearances of capillary patterns on color im- ages were evaluated for three sets of filters. The narrow, band imaging (NBI) filter set (415630 nm, 445630 nm, 500630 nm) was selected to achieve the preferred appearance of the vascular patterns for clini- cal tests. The results of clinical tests in colonoscopy and esophagos- copy indicated that NBI will be useful as a supporting method for observation of the endoscopic findings of early cancer. © 2004 Society of

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Journal ArticleDOI

Detection of colonic dysplasia in vivo using a targeted heptapeptide and confocal microendoscopy

TL;DR: A specific heptapeptide sequence, VRPMPLQ, is identified, synthesized, conjugated with fluorescein and tested in patients undergoing colonoscopy and represents a promising diagnostic imaging approach for the early detection of colorectal cancer and potentially of other epithelial malignancies.
Journal ArticleDOI

The utility of a novel narrow band imaging endoscopy system in patients with Barrett's esophagus.

TL;DR: NBI is a novel diagnostic tool with a high degree of accuracy for the detection of metaplastic and dysplastic tissue within the BE segment and was unable to distinguish areas of IM from those with LGD.
Journal ArticleDOI

Detection and classification of the mucosal and vascular patterns (mucosal morphology) in Barrett's esophagus by using narrow band imaging

TL;DR: NBI with magnification reveals the mucosal morphology characteristics of nondysplastic BE and HGIN, without the need for staining and has a relatively high diagnostic value for HGIN when used for targeted detailed examination of areas of interest.
References
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Book

Fundamentals of digital image processing

TL;DR: This chapter discusses two Dimensional Systems and Mathematical Preliminaries and their applications in Image Analysis and Computer Vision, as well as image reconstruction from Projections and image enhancement.
Journal ArticleDOI

Prevention of colorectal cancer by colonoscopic polypectomy. The National Polyp Study Workgroup.

TL;DR: The results of the National Polyp Study support the view that colorectal adenomas progress to adenocarcinomas, as well as the current practice of searching for and removing adenomatous polyps to prevent coloreCTal cancer.
Journal ArticleDOI

Rising incidence of adenocarcinoma of the esophagus and gastric cardia.

TL;DR: Cancer incidence data from nine areas of the United States revealed steadily rising rates from 1976 to 1987 of adenocarcinomas of the esophagus and gastric cardia, which disproportionately affected white men and rarely occurred among women.
Journal ArticleDOI

Long-term risk of colorectal cancer after excision of rectosigmoid adenomas

TL;DR: The long-term risk of colorectal cancer after rigid-instrument sigmoidoscopy and polypectomy in 1618 patients with rectosigmoid adenomas who did not undergo surveillance was assessed, finding that surveillance may not be of value because the risk of cancer is so low.
Journal ArticleDOI

Diagnosis of colorectal tumorous lesions by magnifying endoscopy

TL;DR: The magnifying colonoscope provides an accurate instantaneous assessment of the histology of colorectal tumorous lesions and may help in decision making during colonoscopy.
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