Narrow Band Imaging: Is the Observation of Vascular Pattern in Neoplastic Colonic Lesions By Using Magnifying Colonoscopy Useful Method Or Not?

2006 ◽  
Vol 63 (5) ◽  
pp. AB217 ◽  
Author(s):  
Shoichi Saito ◽  
Masahiro Ikegami ◽  
Hiroshi Arakawa ◽  
Hisao Tajiri ◽  
Osamu Tsuruta
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Vascular Pattern ◽  
Magnifying Colonoscopy

scholarly journals Manual versus Automatic Classification of Laryngeal Lesions based on Vascular Patterns in CE+NBI Images

2020 ◽  
Vol 6 (3) ◽  
pp. 70-73
Author(s):  
Nazila Esmaeili ◽  
Alfredo Illanes ◽  
Axel Boese ◽  
Nikolaos Davaris ◽  
Christoph Arens ◽  
...  
Keyword(s):  
Vocal Fold ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Automatic Classification ◽  
Vascular Pattern ◽  
Objective Interpretation ◽  
Laryngeal Lesions ◽  
Malignant Lesions ◽  
Manual Classification

AbstractLongitudinal and perpendicular changes in the blood vessels of the vocal fold have been related to the advancement from benign to malignant laryngeal cancer stages. The combination of Contact Endoscopy (CE) and Narrow Band Imaging (NBI) provides intraoperative realtime visualization of vascular pattern in Larynx. The evaluation of these vascular patterns in CE+NBI images is a subjective process leading to differentiation difficulty and subjectivity between benign and malignant lesions. The main objective of this work is to compare multi-observer classification versus automatic classification of laryngeal lesions. Six clinicians visually classified CE+NBI images into benign and malignant lesions. For the automatic classification of CE+NBI images, we used an algorithm based on characterizing the level of the vessel’s disorder. The results of the manual classification showed that there is no objective interpretation, leading to difficulties to visually distinguish between benign and malignant lesions. The results of the automatic classification of CE+NBI images on the other hand showed the capability of the algorithm to solve these issues. Based on the observed results we believe that, the automatic approach could be a valuable tool to assist clinicians to classifying laryngeal lesions.

scholarly journals Narrow-Band Imaging Colonoscopy to Assess Mucosal Angiogenesis in Ulcerative Colitis

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Tao Guo ◽  
Jia-Ming Qian ◽  
Ai-Ming Yang ◽  
Yue Li ◽  
Wei-Xun Zhou
Keyword(s):  
Ulcerative Colitis ◽  
Immunohistochemical Staining ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Strong Association ◽  
Microvascular Density ◽  
Vascular Endothelial ◽  
Vascular Pattern ◽  
Endothelial Growth Factor

Background and Aim. It has been documented that angiogenesis is a largely unstudied component of the pathogenesis of ulcerative colitis (UC). Under narrow-band imaging (NBI) colonoscopy, the mucosal vascular pattern (MVP) can be visualized without the use of dyes. The aim of this study was to assess the grade of mucosal angiogenesis based on the MVP in UC. Methods. A total of 119 colorectal segments taken from 42 patients with UC were observed using NBI colonoscopy. The MVP was classified as follows: clear, obscure, or absent. Quantification of the degree of inflammation was performed using histological colitis scoring. Potent angiogenic activity was assessed by immunohistochemical staining for vascular endothelial growth factor (VEGF). Microvascular density was assessed using vessel counts as revealed by CD31 staining. The correlation between the MVP and histological grades of inflammation and angiogenesis was evaluated. Results. The MVP correlated well with the histological severity of inflammation. We also demonstrated an increasing level of microvascular density and VEGF staining along with the ordered types of MVPs. In addition, a statistically strong association existed between microvascular density and VEGF staining. Conclusions. NBI colonoscopy might be a useful tool for the in vivo assessment of the grade of mucosal angiogenesis in UC.

VASCULAR PATTERN CLASSIFICATION OF COLORECTAL LESIONS WITH NARROW BAND IMAGING MAGNIFYING ENDOSCOPY

2011 ◽  
Vol 23 ◽  
pp. 106-111 ◽  
Author(s):  
YOSHIKI WADA ◽  
SHIN-EI KUDO ◽  
MASASHI MISAWA ◽  
NOBUNAO IKEHARA ◽  
SHIGEHARU HAMATANI
Keyword(s):  
Pattern Classification ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Magnifying Endoscopy ◽  
Vascular Pattern

Narrow band imaging with magnification for the characterization of small and diminutive colonic polyps: pit pattern and vascular pattern intensity

Endoscopy ◽  
2008 ◽  
Vol 40 (10) ◽  
pp. 811-817 ◽  
Author(s):  
J. East ◽  
N. Suzuki ◽  
P. Bassett ◽  
M. Stavrinidis ◽  
H. Thomas ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colonic Polyps ◽  
Vascular Pattern ◽  
Pit Pattern

scholarly journals Narrow-Band Imaging in Digestive Endoscopy

2007 ◽  
Vol 7 ◽  
pp. 449-465 ◽  
Author(s):  
R. Lambert ◽  
K. Kuznetsov ◽  
J-F. Rey
Keyword(s):  
Image Processing ◽  
Intestinal Metaplasia ◽  
Digital Technology ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Magnifying Endoscopy ◽  
Vascular Pattern ◽  
Digestive Endoscopy ◽  
Medical Systems ◽  
Interference Filters

The application of opto-electronics in video-endoscopes improves the accuracy in diagnosis, through image processing and digital technology. Narrow Band Imaging (NBI), consists of using interference filters for the illumination of the target in narrowed blue and green bands of the spectrum. NBI is combined with magnifying endoscopy using an objective macro or an optical zoom. The NBI technique developed by Olympus Medical Systems is now available in the most recent models of video-endoscopes that use the non-sequential system of illumination (Lucera Spectrum) or the sequential R/G/B system of illumination (Exera II). The major contribution of the technique is in the characterization (analysis after detection) of the flat and superficial neoplastic areas of the digestive mucosa, with a specific application to the identification of intestinal metaplasia and early neoplastic changes in the Barrett's esophagus. The technique also proves helpful for the assessment of the vascular pattern in chronic inflammatory disorders of the digestive mucosa.

scholarly journals Correlation of Narrow Band Imaging with Magnifying Colonoscopy and Histology in Colorectal Tumors

2011 ◽  
Vol 44 (1) ◽  
pp. 44 ◽  
Author(s):  
Hee Yong Yoo ◽  
Moon Sung Lee ◽  
Bong Min Ko ◽  
Hee Kyung Kim ◽  
Hyung Su Ahn ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Tumors ◽  
Magnifying Colonoscopy
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