White opaque substance under narrow‐band imaging colonoscopy may hinder microvascular pattern recognition in colorectal tumors

2020 ◽  
Vol 32 (5) ◽  
pp. 826-826
Author(s):  
Keisuke Kawasaki ◽  
Tamotsu Sugai ◽  
Takayuki Matsumoto
Keyword(s):  
Pattern Recognition ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Tumors ◽  
Microvascular Pattern

Characterization of Colorectal Tumors By Narrow Band Imaging (NBI) Magnification New Classification and the Inter & Intra-Observer Valiability

2009 ◽  
Vol 69 (5) ◽  
pp. AB367
Author(s):  
Sayaka Oba ◽  
Shinji Tanaka ◽  
Mayuko Hirata ◽  
Hiroyuki Kanao ◽  
Shiro Oka ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Tumors ◽  
New Classification

Magnifying endoscopy with narrow band imaging for diagnosis of colorectal tumors

2007 ◽  
Vol 65 (7) ◽  
pp. 988-995 ◽  
Author(s):  
Mayuko Hirata ◽  
Shinji Tanaka ◽  
Shiro Oka ◽  
Iwao Kaneko ◽  
Shigeto Yoshida ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Magnifying Endoscopy ◽  
Colorectal Tumors

scholarly journals Endoscopic classification for colorectal tumors using narrow-band imaging

2016 ◽  
Vol 28 (5) ◽  
pp. 537-538 ◽  
Author(s):  
Gian Eugenio Tontini ◽  
Helmut Neumann
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Tumors ◽  
Endoscopic Classification

scholarly journals Relationship between Narrow-Band Imaging Magnifying Observation and Pit Pattern Diagnosis in Colorectal Tumors

Digestion ◽  
2013 ◽  
Vol 87 (1) ◽  
pp. 53-58 ◽  
Author(s):  
Nana Hayashi ◽  
Shinji Tanaka ◽  
Hiroyuki Kanao ◽  
Shiro Oka ◽  
Shigeto Yoshida ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Tumors ◽  
Pit Pattern ◽  
Pattern Diagnosis

scholarly journals Brief Education on Microvasculature and Pit Pattern for Trainees Significantly Improves Estimation of the Invasion Depth of Colorectal Tumors

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Joon Sung Kim ◽  
Bo-In Lee ◽  
Hwang Choi ◽  
Bong Koo Kang ◽  
Jong In Kim ◽  
...  
Keyword(s):  
Diagnostic Accuracy ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Pattern Identification ◽  
Submucosal Invasion ◽  
Colorectal Tumors ◽  
Pit Pattern ◽  
Invasion Depth ◽  
White Light Endoscopy ◽  
Magnifying Chromoendoscopy

Objectives. This study was performed to evaluate the effectiveness of education for trainees on the gross findings identified by conventional white-light endoscopy (CWE), the microvascular patterns identified by magnifying narrow-band imaging endoscopy (MNE), and the pit patterns identified by magnifying chromoendoscopy (MCE) in estimation of the invasion depth of colorectal tumors.Methods. A total of 420 endoscopic images of 35 colorectal tumors were used. Five trainees estimated the invasion depth of the tumors by reviewing the CWE images before education. Afterwards, the trainees estimated the invasion depth of the same tumors after brief education on CWE, MNE and MCE images, respectively.Results. The initial diagnostic accuracy for deep submucosal invasion before education and after education on CWE, MNE, and MCE findings was 54.3%, 55.4%, 67.4%, and 76.6%, respectively. The diagnostic accuracy increased significantly after MNE education (P=0.028). The specificity for deep submucosal invasion before education and after education on CWE, MNE, and MCE findings was 47.9%, 45.7%, 65.0%, and 80.7%, respectively. The specificity increased significantly after MNE (P=0.002) and MCE (P=0.005) education.Conclusion. Brief education on microvascular pattern identification by MNE and pit pattern identification by MCE significantly improves trainees’ estimations of the invasion depth of colorectal tumors.

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