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Polyp Segmentation in NBI Colonoscopy [chapter]

Sebastian Gross, Manuel Kennel, Thomas Stehle, Jonas Wulff, Jens Tischendorf, Christian Trautwein, Til Aach
2009 Bildverarbeitung für die Medizin 2009  
We propose a segmentation algorithm as a part of an automatic polyp classification system for colonoscopic Narrow-Band images.  ...  Endoscopic screening of the colon (colonoscopy) is performed to prevent cancer and to support therapy.  ...  To our best knowledge there are no publications on polyp segmentation in NBI colonoscopy available.  ... 
doi:10.1007/978-3-540-93860-6_51 dblp:conf/bildmed/GrossKSWTTA09 fatcat:uwr5clqwprguxeryldnqmqkbvm

Narrow‑band imaging and white‑light endoscopy for detection of colorectal polyps: a randomized study

Dariusz Kąkol, Mariusz Frączek, Aleksandra Banaszkiewicz, Jan Pertkiewicz
2013 Polish Archives of Internal Medicine  
per patient was 0.747 after the first colonoscopy and 0.897 after the second colonoscopy in NBI and 0.834 in WLE.  ...  TAbLE 1 . 1 TAbLE 3 . 3 TAbLE 4 ). 4 TAbLE 1 1 Detection of polyps in the study groups NBI group WLE group all polyps first colonoscopy, n 224 182 second colonoscopy, n 48 38 adenomas  ...  Połowa pominiętych gruczolaków (n = 15) została znaleziona w kątnicy i zstępnicy. wNIOsKI Skuteczność NBI i WBE w wykrywaniu polipów jelita grubego pominiętych w czasie kolonoskopii jest porównywalna.  ... 
doi:10.20452/pamw.1923 fatcat:zosr7oe66racnbcxphqkpitrgy

Polyp detection rates using magnification with narrow band imaging and white light

Nooman Gilani, Sally Stipho, James D Panetta, Sorin Petre, Michele A Young, Francisco C Ramirez
2015 World Journal of Gastrointestinal Endoscopy  
Tandem colonoscopy was performed in a sequential and segmental fashion using one of 3 strategies: white light followed by narrow band imaging [Group A: white light (WL) → narrow band imaging (NBI)]; narrow  ...  Miss rate of polyps and adenomas however was significantly higher when NBI was used first (29.3% and 30.3%, respectively; P < 0.05). Most missed adenomas were ≤ 5 mm in size.  ...  Overall, the second look of the tandem segmental colonoscopy detected 18% new polyps (104/577 polyps).  ... 
doi:10.4253/wjge.v7.i5.555 pmid:25992195 pmcid:PMC4436924 fatcat:bmcn6zufxzg7hpj73wl76ossg4

Separation of color channels from conventional colonoscopy images improves deep neural network detection of polyps

Lily L. Lai, Andrew Blakely, Marta Invernizzi, James Lin, Trilokesh Kidambi, Kurt A. Melstrom, Kevin Yu, Thomas Lu
2021 Journal of Biomedical Optics  
The trained DNN was then tested for performance in detection of polyps. The DNN performed better using full-colored NBI over WLE images in the detection of polyps.  ...  Images of normal colon mucosa and polyps from colonoscopies were studied. Each color image was extracted based on the color channel: red/green/blue.  ...  Acknowledgments The research was supported in part by the City of Hope National Medical Center and the University of California at Riverside Research Initiative Fund.  ... 
doi:10.1117/1.jbo.26.1.015001 pmid:33442965 pmcid:PMC7805485 fatcat:yms7eihgm5h2pm37yjc53cedga

The Assessment of the Colo-rectal Polyps in Order to the New Diagnostic and Therapeutic Strategies

Diac Andreea Raluca, Brusnic Olga, Gabos Gabriella, Onisor Danusia, Drasoveanu Silvia Cosmina, Boeriu Alina, Dobru Daniela Ecaterina
2015 Acta Medica Marisiensis  
NBI was accurate in real-time prediction of the histology of the colo-rectal polyps. The results are relevant for application of the new strategies in the managment of the diminutive polyps.  ...  This paper is a descriptive retrospective study on 52 pacients reffered for colonoscopy in Gastroenterology Clinic – Clinical County Hospital Targu Mures from January until September 2014. 80 polyps were  ...  NICE classification Fig. 1 . 1 Distribution of the polyps in the colon segments Fig. 3 . 1 Fig. 4 . 314 Endoscopic appearance (white light endoscopy and NBI)of a diminutive polyp -NICE Endoscopic  ... 
doi:10.1515/amma-2015-0060 fatcat:iyip42e3nzabpcejmaeoefgawi

Narrow-band imaging and high-definition white-light endoscopy in patients with serrated lesions not fulfilling criteria for serrated polyposis syndrome: a randomized controlled trial with tandem colonoscopy

Fausto Riu Pons, Montserrat Andreu, Dolores Naranjo, Marco Antonio Álvarez-González, Agustín Seoane, Josep Maria Dedeu, Luis Barranco, Xavier Bessa
2020 BMC Gastroenterology  
A shorter surveillance colonoscopy interval increases the detection of missed serrated polyps and could change the diagnosis of SPS in approximately one in every five patients.  ...  Equally, no differences were found in the polyp miss rate of NBI versus HD-WLE: 21.3% versus 26.1% (OR 0.77, 95% CI: 0.43-1.38).  ...  for colonoscopy defined by the Boston Bowel Preparation Score (BBPS): 0-1 points in any of the three segments of the colon [14, 15] .  ... 
doi:10.1186/s12876-020-01257-4 pmid:32299380 pmcid:PMC7164214 fatcat:54d5efu4rbb3xfiadau5aptryi

Can optical diagnosis of small colon polyps be accurate? Comparing standard scope without narrow banding to high definition scope with narrow banding

Hassan Ashktorab, Firoozeh Etaati, Farahnaz Rezaeean, Mehdi Nouraie, Mansour Paydar, Hassan Hassanzadeh Namin, Andrew Sanderson, Rehana Begum, Kawtar Alkhalloufi, Hassan Brim, Adeyinka O Laiyemo
2016 World Journal of Gastroenterology  
Colonoscopy diagnosis is not yet fully matched with pathologic diagnosis of colon polyp.  ...  AIM: To study the accuracy of using high definition (HD) scope with narrow band imaging (NBI) vs standard white light colonoscope without NBI (ST), to predict the histology of the colon polyps, particularly  ...  Compared with white light, however, NBI did not significantly improve accuracy in any size or shape category, nor for any segment of the colon.  ... 
doi:10.3748/wjg.v22.i28.6539 pmid:27605888 pmcid:PMC4968133 fatcat:frtq7lanznd6zfu23jjotb7kyu

Efficacy and safety of cold forceps polypectomy utilizing the jumbo cup: a prospective study

Hiroshi Hasegawa, Shigeki Bamba, Kenichiro Takahashi, Masaki Murata, Taketo Otsuka, Hiroshi Matsumoto, Takehide Fujimoto, Rie Osak, Hirotsugu Imaeda, Atsushi Nishida, Hiromitsu Ban, Ayano Sonoda (+4 others)
2019 Intestinal Research  
recurrence rate of missed or residual polyp after CFP by performing follow-up colonoscopy 1 year later.  ...  The probable recurrence rate, which was defined as recurrence in the same colorectal segment, was 17%. Adenoma-free colon was achieved in 55% of patients at initial resection.  ...  Percentage of new lesions found at 1-year follow-up colonoscopy in the same segment as the original adenoma resection site at initial colonoscopy or in a different segment.  ... 
doi:10.5217/ir.2018.00103 pmid:30477284 pmcid:PMC6505094 fatcat:uifaybxbezal3b7gdreflcakia

Optical diagnosis of colorectal polyps using convolutional neural networks

Rawen Kader, Andreas V Hadjinicolaou, Fanourios Georgiades, Danail Stoyanov, Laurence B Lovat
2021 World Journal of Gastroenterology  
Colonoscopy remains the gold standard investigation for colorectal cancer screening as it offers the opportunity to both detect and resect pre-malignant and neoplastic polyps.  ...  Here, we review advances in CNN for the optical diagnosis of colorectal polyps, current limitations and future directions.  ...  The CNN presented in Zachariah et al[26] reached PIVI 1 thresholds in both WLI and NBI with normal magnification, achieving concordance with histology-based colonoscopy surveillance intervals in 90.9%  ... 
doi:10.3748/wjg.v27.i35.5908 pmid:34629808 pmcid:PMC8475008 fatcat:da3cjlyirbeylbuajqq2c3l3o4

GAN Inversion for Data Augmentation to Improve Colonoscopy Lesion Classification [article]

Mayank Golhar, Taylor L. Bobrow, Saowanee Ngamruengphong, Nicholas J. Durr
2022 arXiv   pre-print
Our experiments show this approach can perform multiple colonoscopy data augmentations, which improve the downstream polyp classification performance over baseline and comparison methods by up to 6%.  ...  We perform image modality translation (style transfer) between white light and narrowband imaging (NBI).  ...  Acknowledgments This work was supported in part by the National Institutes of Health Trailblazer Award (No. R21 EB024700).  ... 
arXiv:2205.02840v1 fatcat:yjcuhmsrhzgjxdetdemvaqi5ma

Optical Diagnosis of Small Colorectal Polyp Histology with High-Definition Colonoscopy Using Narrow Band Imaging

Amit Rastogi
2013 Clinical Endoscopy  
In one study, 34 images of 434 polyps <10 mm in size with magnification NBI were evaluated by two experts, two nonexperts and a computer-based algorithm based on vessel segmentation by phase congruency  ...  optical diagnosis of polyps during colonoscopy.  ... 
doi:10.5946/ce.2013.46.2.120 pmid:23614121 pmcid:PMC3630305 fatcat:ta65sivokrabvnkutd6rr6gzhm

Automatic Segmentation of Polyps in Colonoscopic Narrow-Band Imaging Data

M. Ganz, Xiaoyun Yang, G. Slabaugh
2012 IEEE Transactions on Biomedical Engineering  
A barrier to an automatic system is that polyp classification algorithms require manual segmentations of the polyps, so we automatically segment polyps in colonoscopic NBI data.  ...  In this paper, we develop the first part of a novel optical biopsy application based on narrowband imaging (NBI).  ...  Marks Hospital, Ocford Radcliffe Hospital, Indiana University and Imperial College for providing the NBI data. We would especially like to thank Ana Ignatovic for providing expert segmentations.  ... 
doi:10.1109/tbme.2012.2195314 pmid:22542647 fatcat:4lvasnxjmvf45oxh7kkix76syy

PICCOLO White-Light and Narrow-Band Imaging Colonoscopic Dataset: A Performance Comparative of Models and Datasets

Luisa F. Sánchez-Peralta, J. Blas Pagador, Artzai Picón, Ángel José Calderón, Francisco Polo, Nagore Andraka, Roberto Bilbao, Ben Glover, Cristina L. Saratxaga, Francisco M. Sánchez-Margallo
2020 Applied Sciences  
the polyps.  ...  , which would eventually result in a better and earlier diagnosis of colorectal cancer, hence improving patient outcomes.  ...  There are currently some publicly available datasets of colonoscopy images that can be used for polyp detection, localisation and segmentation [17, 18] .  ... 
doi:10.3390/app10238501 fatcat:dcsubgqeovektjwdmpyn3usrwu

Comparison of deep learning and conventional machine learning methods for classification of colon polyp types

Refika Sultan Doğan, Bülent Yılmaz
2021 The EuroBiotech Journal  
Secondly, simple convolutional neural networks (CNN) based architecture was built to train with the colonoscopy images containing colon polyps.  ...  This study shows the feasibility of using conventional machine learning or deep learning based approaches in automatic classification of colon types on colonoscopy images.  ...  Haj-Manouchehri et. al. designed a study related to the detection of frames containing polyps and polyp segmentation (41).  ... 
doi:10.2478/ebtj-2021-0006 fatcat:xxo5w6cmh5e4ded75xbk37sthi

Endoscopic innovations to increase the adenoma detection rate during colonoscopy

Vincent K Dik
2014 World Journal of Gastroenterology  
In the past several years, new endoscopic techniques have been introduced to improve the detection of polyps and adenomas.  ...  Core tip: Up to a quarter of polyps and adenomas are missed during colonoscopy due to poor visualization behind folds and the inner curves of flexures, and the presence of flat lesions that are difficult  ...  In contrast, studies in which high definition NBI was compared to standard definition colonoscopy have shown differences in detection and miss rates of polyps and adenomas [18, 26, 27] .  ... 
doi:10.3748/wjg.v20.i9.2200 pmid:24605019 pmcid:PMC3942825 fatcat:lvi6xoxhj5ao7lefjcvn2eumui
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