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Polyp Segmentation in NBI Colonoscopy
[chapter]
2009
Bildverarbeitung für die Medizin 2009
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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
2013
Polish Archives of Internal Medicine
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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
2015
World Journal of Gastrointestinal Endoscopy
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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
2021
Journal of Biomedical Optics
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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
2015
Acta Medica Marisiensis
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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
2020
BMC Gastroenterology
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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
2016
World Journal of Gastroenterology
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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
2019
Intestinal Research
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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
2021
World Journal of Gastroenterology
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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]
2022
arXiv
pre-print
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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
2013
Clinical Endoscopy
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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
2012
IEEE Transactions on Biomedical Engineering
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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
2020
Applied Sciences
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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
2021
The EuroBiotech Journal
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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
2014
World Journal of Gastroenterology
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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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