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Video capsule endoscopy

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https://www.readbyqxmd.com/read/29470172/hookworm-detection-in-wireless-capsule-endoscopy-images-with-deep-learning
#1
Jun-Yan He, Xiao Wu, Yu-Gang Jiang, Qiang Peng, Ramesh Jain
As one of the most common human helminths, hookworm is a leading cause of maternal and child morbidity, which seriously threatens human health. Recently, wireless capsule endoscopy (WCE) has been applied to automatic hookworm detection. Unfortunately, it remains a challenging task. In recent years, deep convolutional neural network (CNN) has demonstrated impressive performance in various image and video analysis tasks. In this paper, a novel deep hookworm detection framework is proposed for WCE images, which simultaneously models visual appearances and tubular patterns of hookworms...
May 2018: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/29468094/chobs-color-histogram-of-block-statistics-for-automatic-bleeding-detection-in-wireless-capsule-endoscopy-video
#2
Tonmoy Ghosh, Shaikh Anowarul Fattah, Khan A Wahid
Wireless capsule endoscopy (WCE) is the most advanced technology to visualize whole gastrointestinal (GI) tract in a non-invasive way. But the major disadvantage here, it takes long reviewing time, which is very laborious as continuous manual intervention is necessary. In order to reduce the burden of the clinician, in this paper, an automatic bleeding detection method for WCE video is proposed based on the color histogram of block statistics, namely CHOBS. A single pixel in WCE image may be distorted due to the capsule motion in the GI tract...
2018: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/29453774/hobnail-retiform-dabska-hemangioendothelioma-located-in-jejunum
#3
Yuxin Wang, Huan Han, Yiqi Du
A 27-year-old man referred to our department with a 1-month history of intermittent melena and dizziness. Gastroscopy and colonoscopy did not identify the site of bleeding. Laboratory data showed hemoglobin 6.6g/dL. Video capsule endoscopy (CE, Anhon,China) and antegrade double-ballon enteroscopy (DBE, EN450P5, Fujinon, Japan) were carried out and a space occupying lesion in the proximal jejunum was identified (Fig.1). Ink tattooing via DBE was performed to mark the site of the tumor.Then the patient underwent jejunectomy...
February 17, 2018: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/29449505/detection-of-crohn-disease-in-patients-with-spondyloarthropathy-the-space-capsule-study
#4
Uri Kopylov, Michael Starr, Craig Watts, Serge Dionne, Marc Girardin, Ernest G Seidman
OBJECTIVE: Inflammatory bowel disease (IBD) is generally reported to be associated with spondylarthropathies (SpA) in 5%-15% of cases. Systematic colonoscopic assessment by protocol demonstrated mucosal inflammation characteristic of Crohn disease (CD) in up to one-third of patients with SpA. Video capsule endoscopy (CE) is a superior diagnostic tool to detect small bowel mucosal disease. Our study compared the accuracy of CE to standard colonoscopy for detection of inflammatory bowel lesions in patients with SpA, and to describe predictors of small bowel inflammation (SBI) in this cohort...
February 15, 2018: Journal of Rheumatology
https://www.readbyqxmd.com/read/29409067/meta-analysis-of-randomized-controlled-trials-challenging-the-usefulness-of-purgative-preparation-before-small-bowel-video-capsule-endoscopy
#5
Paraskevas Gkolfakis, Georgios Tziatzios, George D Dimitriadis, Konstantinos Triantafyllou
BACKGROUND:  The usefulness of purgative preparation before small-bowel video capsule endoscopy is controversial. We aimed to examine the effect of purgative preparation on small-bowel video capsule endoscopy outcomes. METHODS:  We performed literature searches in MEDLINE and the Cochrane library for randomized controlled trials evaluating the effect of purgative preparation (polyethylene glycol, sodium phosphate, others) vs. clear-liquid diet/fasting in patients undergoing small-bowel capsule endoscopy...
February 6, 2018: Endoscopy
https://www.readbyqxmd.com/read/29407997/cluster-based-statistical-feature-extraction-method-for-automatic-bleeding-detection-in-wireless-capsule-endoscopy-video
#6
Tonmoy Ghosh, Shaikh Anowarul Fattah, Khan A Wahid, Wei-Ping Zhu, M Omair Ahmad
Wireless capsule endoscopy (WCE) is capable of demonstrating the entire gastrointestinal tract at an expense of exhaustive reviewing process for detecting bleeding disorders. The main objective is to develop an automatic method for identifying the bleeding frames and zones from WCE video. Different statistical features are extracted from the overlapping spatial blocks of the preprocessed WCE image in a transformed color plane containing green to red pixel ratio. The unique idea of the proposed method is to first perform unsupervised clustering of different blocks for obtaining two clusters and then extract cluster based features (CBFs)...
January 5, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29399619/novel-experimental-and-software-methods-for-image-reconstruction-and-localization-in-capsule-endoscopy
#7
Anastasios Koulaouzidis, Dimitris K Iakovidis, Diana E Yung, Evangelos Mazomenos, Federico Bianchi, Alexandros Karagyris, George Dimas, Danail Stoyanov, Henrik Thorlacius, Ervin Toth, Gastone Ciuti
Background and study aims : Capsule endoscopy (CE) is invaluable for minimally invasive endoscopy of the gastrointestinal tract; however, several technological limitations remain including lack of reliable lesion localization. We present an approach to 3D reconstruction and localization using visual information from 2D CE images. Patients and methods : Colored thumbtacks were secured in rows to the internal wall of a LifeLike bowel model. A PillCam SB3 was calibrated and navigated linearly through the lumen by a high-precision robotic arm...
February 2018: Endoscopy International Open
https://www.readbyqxmd.com/read/29399040/clinical-outcome-of-patients-with-obscure-gastrointestinal-bleeding-during-antithrombotic-drug-therapy
#8
Yoshiyasu Kono, Seiji Kawano, Yuki Okamoto, Yuka Obayashi, Yuki Baba, Hiroyuki Sakae, Makoto Abe, Tatsuhiro Gotoda, Toshihiro Inokuchi, Hiromitsu Kanzaki, Masaya Iwamuro, Yoshiro Kawahara, Hiroyuki Okada
Background: The clinical outcome of patients with obscure gastrointestinal bleeding (OGIB) during antithrombotic drug therapy has not been fully investigated. Methods: Patients who underwent video capsule endoscopy (VCE) for the investigation of OGIB at Okayama University Hospital from January 2009 to March 2016 were enrolled. We evaluated the VCE findings, the patterns of OGIB, and the rate of rebleeding within 1 year in antithrombotic drug users and antithrombotic drug nonusers...
2018: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/29396130/meta-analysis-shows-similar-re-bleeding-rates-among-western-and-eastern-populations-after-index-video-capsule-endoscopy
#9
REVIEW
Georgios Tziatzios, Paraskevas Gkolfakis, Cesare Hassan, Ervin Toth, Angelo Zullo, Anastasios Koulaouzidis, George D Dimitriadis, Konstantinos Triantafyllou
BACKGROUND & AIMS: Video capsule endoscopy (VCE) is the first-line diagnostic procedure for investigating obscure gastrointestinal bleeding (OGIB). Different re-bleeding rates following index VCE have been reported among Western and Eastern studies. METHODS: We conducted a comprehensive literature search to identify studies examining re-bleeding rates after VCE for OGIB. Meta-analysis assessed the pooled proportion of re-bleeding events after VCE for OGIB according to study's origin (Western vs...
January 9, 2018: Digestive and Liver Disease
https://www.readbyqxmd.com/read/29372393/approach-to-the-diagnostic-workup-and-management-of-small-bowel-lesions-at-a-tertiary-care-center
#10
Jonathan Green, Christopher R Schlieve, Ann K Friedrich, Kevin Baratta, David H Ma, May Min, Krunal Patel, David Stein, David R Cave, Demetrius E Litwin, Mitchell A Cahan
BACKGROUND: Small bowel lesions (SBL) are rare, representing diagnostic and management challenges. The purpose of this cross-sectional study was to evaluate diagnostic modalities used and management practices of patients with SBL at an advanced endoscopic referral center. METHODS: We analyzed patients undergoing surgical management for SBL from 2005 to 2015 at a single tertiary care center. Patients were stratified into gastrointestinal bleed/anemia (GIBA) or obstruction/pain (OP)...
January 25, 2018: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/29317942/carcinoids-and-capsules-a-case-series-highlighting-the-utility-of-capsule-endoscopy-in-patients-with-small-bowel-carcinoids
#11
Michael G Noujaim, Jonathan Green, May Min, Christopher R Schlieve, Krunal Patel, Mitchell Cahan, David Cave
Background: Neuroendocine tumors (NETs) or carcinoids arise at many different sites of the gastrointestinal tract. The small intestine is the most common site for NETs. Diagnosing small bowel carcinoids remains challenging given their non-specific presentations and the overall low incidence of small bowel tumors. Video capsule endoscopy (VCE) has significanly improved our ability to detect small bowel malignancies. We explore the value of VCE in the initial workup and management of a series of small bowel carcinoid patients...
December 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/29245165/video-capsule-endoscopy-diagnosis-of-takayasu-s-arteritis
#12
Carolina Olano, Henry Cohen
No abstract text is available yet for this article.
December 15, 2017: Endoscopy
https://www.readbyqxmd.com/read/29238592/predictors-and-characteristics-of-angioectasias-in-patients-with-obscure-gastrointestinal-bleeding-identified-by-video-capsule-endoscopy
#13
Simon Nennstiel, Annkathrin Machanek, Stefan von Delius, Bruno Neu, Bernhard Haller, Mohamed Abdelhafez, Roland M Schmid, Christoph Schlag
Background: In obscure gastrointestinal bleeding, angioectasias are common findings in video capsule endoscopy (VCE). Objective: The objective of this study was to identify predictors and characteristics of small bowel angioectasias. Methods: Video capsule examinations between 1 July 2001 and 31 July 2011 were retrospectively reviewed. Patients with obscure gastrointestinal bleeding were identified, and those with small bowel angioectasia were compared with patients without a definite bleeding source...
December 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29238584/systematic-review-and-meta-analysis-of-the-performance-of-nurses-in-small-bowel-capsule-endoscopy-reading
#14
Diana E Yung, Ignacio Fernandez-Urien, Sarah Douglas, John N Plevris, Reena Sidhu, Mark E McAlindon, Simon Panter, Anastasios Koulaouzidis
Introduction: Increasing demands on healthcare systems mean that nurses are taking on more roles as physician extenders. Capsule endoscopy (CE) is a laborious procedure where specialist nurses could reduce physician workload and rationalise resource utilisation. The aim of this review and meta-analysis is to consolidate data on nurses' performance in small bowel CE (SBCE). Materials and methods: A comprehensive literature search was conducted for randomised controlled trials and comparative studies on nurses in SBCE reading compared to physicians...
December 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29222714/domperidone-prolongs-oral-to-duodenal-transit-time-in-video-capsule-endoscopy
#15
Michael Mcfarlane, B Liu, C Nwokolo
PURPOSE: Domperidone is thought to accelerate gastric emptying via D2 receptor antagonism at the gastro-oesophageal and gastro-duodenal junctions. Listed in the BNF as a prokinetic anti-emetic, it has been used in video capsule endoscopy (VCE) to accelerate capsule delivery to the small intestine. We audited VCEs performed at UHCW from 2011, when as standard practice, domperidone was given pre-VCE, to 2012, after its discontinuation due to doubts about its effectiveness. METHODS: Thirty-one patients received oral domperidone 20 mg pre-VCE...
December 8, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29201874/a-global-perspective-on-capsule-endoscopy
#16
REVIEW
Tanja Nowak
A search of the internet today to quantify the estimated value of capsules from a global perspective, easily delivers figures stating around $200 million in 2014 to about $400 million by 2020, which would be approximately 10% of the gastrointestinal endoscopic market. Is this a steep rise within just six years or could the capsule market do even better? What chances does this offer and what are the key aspects for future success? By 2020, more than 1 billion people are aged sixty or older and around one third of them will live in what the UN calls "more developed regions"...
November 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29122470/accuracy-of-computed-tomographic-enterography-for-obscure-gastrointestinal-bleeding-a-diagnostic-meta-analysis
#17
Bosheng He, Jushun Yang, Jing Xiao, Jinhua Gu, Feixiang Chen, Lin Wang, Junbo Qian, Shenchu Gong
RATIONALE AND OBJECTIVES: Obscure gastrointestinal bleeding (OGIB) is the bleeding from the gastrointestinal tract without definite source that persists and recurs after a negative endoscopic evaluation. The study aimed to systematically evaluate the diagnostic accuracy of computed tomography enterography on OGIB detection by meta-analysis. MATERIALS AND METHODS: Studies were searched in relevant databases. With predefined inclusion criteria, eligible studies were included, followed by quality assessment using the Quality Assessment of Diagnostic Accuracy Studies scoring system...
November 6, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29118868/efficacy-of-video-capsule-endoscopy-in-the-management-of-suspected-small-bowel-bleeding-in-patients-with-continuous-flow-left-ventricular-assist-devices
#18
Thomas A Zikos, Jennifer Pan, Berkeley Limketkai, Dipanjan Banerjee, Nielsen Fernandez-Becker
Background: Continuous flow left ventricular assist device (CF-LVAD) patients have a high prevalence of gastrointestinal bleeding from the small bowel. Video capsule endoscopy (VCE) is often used for diagnosis in these patients, but efficacy has yet to be determined. In this study, we evaluated the efficacy of VCE in the management of CF-LVAD patients with suspected small bowel bleeding by comparing to a non-VCE CF-LVAD control group. Methods: We retrospectively reviewed the charts of all patients with CF-LVADs implanted at Stanford Hospital from January 2010 to October 2015...
October 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/29093427/the-capsule-endoscopy-findings-in-s-1-induced-enteritis-with-severe-diarrhea-during-adjuvant-chemotherapy-for-gastric-cancer-with-video
#19
Kazuhiro Ota, Toshihisa Takeuchi, Kouki Kodama, Haruhiko Ozaki, Satoshi Harada, Yuichi Kojima, Sadaharu Nouda, Masahiro Goto, Kazuhide Higuchi
Although S-1 chemotherapy is used widely as postoperative adjuvant chemotherapy for gastric cancer, some patients experience diarrhea during treatment. The patient was a 39-year-old woman who underwent distal gastrectomy for gastric cancer and who had started S-1 chemotherapy as postoperative adjuvant chemotherapy 1 week before her presentation. She experienced severe diarrhea immediately after starting the course of S-1 tablets. Capsule endoscopy revealed severe S-1-induced enteritis with extensive mucosal injury in the ileum and red intestinal fluid due to the oozing of blood in the ileum...
November 1, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29059590/quality-assessment-for-wireless-capsule-endoscopy-videos-compressed-via-hevc-from-diagnostic-quality-to-visual-perception
#20
Muhammad Arslan Usman, Muhammad Rehan Usman, Soo Young Shin
Maintaining the quality of medical images and videos is an essential part of the e-services provided by the healthcare sector. The convergence of modern communication systems and the healthcare industry necessitates the provision of better quality of service and experience by the service provider. Recent inclusion and standardization of the high efficiency video coder (HEVC) has made it possible for medical data to be compressed and transmitted over wireless networks with minimal compromise of the quality. Quality evaluation and assessment of these medical videos transmitted over wireless networks is another important research area that requires further exploration and attention...
October 9, 2017: Computers in Biology and Medicine
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