Abstract:
BACKGROUND AND AIMS:Protruding lesions of the small bowel vary in wireless capsule endoscopy (WCE) images, and their automatic detection may be difficult. We aimed to develop and test a deep learning-based system to automatically detect protruding lesions of various types in WCE images. METHODS:We trained a deep convolutional neural network (CNN), using 30,584 WCE images of protruding lesions from 292 patients. We evaluated CNN performance by calculating the area under the receiver operating characteristic curve (AUC), sensitivity, and specificity, using an independent set of 17,507 test images from 93 patients, including 7507 images of protruding lesions from 73 patients. RESULTS:The developed CNN analyzed 17,507 images in 530.462 seconds. The AUC for detection of protruding lesions was 0.911 (95% confidence interval [Cl], 0.9069-0.9155). The sensitivity and specificity of the CNN were 90.7% (95% CI, 90.0%-91.4%) and 79.8% (95% CI, 79.0%-80.6%), respectively, at the optimal cut-off value of 0.317 for probability score. In a subgroup analysis of the category of protruding lesions, the sensitivities were 86.5%, 92.0%, 95.8%, 77.0%, and 94.4% for the detection of polyps, nodules, epithelial tumors, submucosal tumors, and venous structures, respectively. In individual patient analyses (n = 73), the detection rate of protruding lesions was 98.6%. CONCLUSION:We developed and tested a new computer-aided system based on a CNN to automatically detect various protruding lesions in WCE images. Patient-level analyses with larger cohorts and efforts to achieve better diagnostic performance are necessary in further studies.
journal_name
Gastrointest Endoscjournal_title
Gastrointestinal endoscopyauthors
Saito H,Aoki T,Aoyama K,Kato Y,Tsuboi A,Yamada A,Fujishiro M,Oka S,Ishihara S,Matsuda T,Nakahori M,Tanaka S,Koike K,Tada Tdoi
10.1016/j.gie.2020.01.054subject
Has Abstractpub_date
2020-07-01 00:00:00pages
144-151.e1issue
1eissn
0016-5107issn
1097-6779pii
S0016-5107(20)30132-2journal_volume
92pub_type
杂志文章abstract:BACKGROUND AND AIMS:The prevalence of gastroparesis (Gp), a chronic debilitating disorder, and resulting hospitalizations are increasing. Gastric peroral endoscopic pyloromyotomy (POP or GPOEM) is a novel technique in the treatment of refractory Gp. Despite the initial promising results of GPOEM, one-third of patients ...
journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1016/j.gie.2020.01.016
更新日期:2020-09-01 00:00:00
abstract:BACKGROUND AND AIMS:Of patients who are seen with GI hemorrhage, approximately 5% will have a small-bowel source. Management of these patients entails considerable expense. We performed a decision analysis to explore the optimal management strategy for obscure GI hemorrhage. METHODS:We used a cost-effectiveness analys...
journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1016/j.gie.2008.01.035
更新日期:2008-11-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1016/j.gie.2013.05.020
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1016/s0016-5107(99)70390-1
更新日期:1999-05-01 00:00:00
abstract::Monopolar hot biopsy forceps were developed for simultaneous tissue biopsy and electrocoagulation. Many endoscopists used these forceps for coagulation of diminutive polyps of the colon. The rationale for diminutive polyp eradication is to destroy neoplastic tissue and possibly prevent colon cancer. However, convincin...
journal_title:Gastrointestinal endoscopy
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更新日期:1992-11-01 00:00:00
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pub_type: 杂志文章
doi:10.1067/mge.2002.125107
更新日期:2002-07-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1016/j.gie.2010.07.045
更新日期:2010-11-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章,多中心研究
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journal_title:Gastrointestinal endoscopy
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更新日期:2016-07-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1016/j.gie.2006.12.038
更新日期:2007-04-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1067/mge.2001.116563
更新日期:2001-08-01 00:00:00
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更新日期:2021-01-18 00:00:00
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journal_title:Gastrointestinal endoscopy
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更新日期:2018-01-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1016/s0016-5107(90)71168-6
更新日期:1990-11-01 00:00:00
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pub_type: 杂志文章,随机对照试验
doi:10.1016/j.gie.2010.01.057
更新日期:2010-07-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1016/s0016-5107(95)70003-x
更新日期:1995-12-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1016/s0016-5107(89)72716-4
更新日期:1989-03-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1016/j.gie.2018.01.032
更新日期:2018-07-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
doi:10.1016/j.gie.2017.12.019
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doi:10.1016/s0016-5107(98)70124-5
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journal_title:Gastrointestinal endoscopy
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journal_title:Gastrointestinal endoscopy
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Gastrointestinal endoscopy
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1995-10-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1990-05-01 00:00:00
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journal_title:Gastrointestinal endoscopy
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更新日期:2002-10-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章,评审
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更新日期:2013-05-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
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更新日期:1995-07-01 00:00:00
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journal_title:Gastrointestinal endoscopy
pub_type: 杂志文章
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更新日期:2020-07-01 00:00:00