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Video capsule endoscopy

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https://www.readbyqxmd.com/read/28226921/hardware-image-assessment-for-wireless-endoscopy-capsules
#1
M A Khorsandi, N Karimi, S Samavi, M Hajabdollahi, S M R Soroushmehr, K Ward, K Najarian, M A Khorsandi, N Karimi, S Samavi, M Hajabdollahi, S M R Soroushmehr, K Ward, K Najarian, K Ward, S M R Soroushmehr, M Hajabdollahi, S Samavi, K Najarian, M A Khorsandi, N Karimi
Wireless capsule endoscopy is a new technology in the realm of telemedicine that has many advantages over the traditional endoscopy systems. Transmitted images should help diagnosis of diseases of the gastrointestinal tract. Two important technical challenges for the manufacturers of these capsules are power consumption and size of the circuitry. Also, the system must be fast enough for real-time processing of image or video data. To solve this problem, many hardware designs have been proposed for implementation of the image processing unit...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226579/a-deep-convolutional-neural-network-for-bleeding-detection-in-wireless-capsule-endoscopy-images
#2
Xiao Jia, Max Q-H Meng, Xiao Jia, Max Q-H Meng, Xiao Jia, Max Q-H Meng
Wireless Capsule Endoscopy (WCE) is a standard non-invasive modality for small bowel examination. Recently, the development of computer-aided diagnosis (CAD) systems for gastrointestinal (GI) bleeding detection in WCE image videos has become an active research area with the goal of relieving the workload of physicians. Existing methods based primarily on handcrafted features usually give insufficient accuracy for bleeding detection, due to their limited capability of feature representation. In this paper, we present a new automatic bleeding detection strategy based on a deep convolutional neural network and evaluate our method on an expanded dataset of 10,000 WCE images...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28216967/assessment-of-multi-modality-evaluations-of-obscure-gastrointestinal-bleeding
#3
Ryan Law, Jithinraj E Varayil, Louis M WongKeeSong, Jeff Fidler, Joel G Fletcher, John Barlow, Jeffrey Alexander, Elizabeth Rajan, Stephanie Hansel, Brenda Becker, Joseph J Larson, Felicity T Enders, David H Bruining, Nayantara Coelho-Prabhu
AIM: To determine the frequency of bleeding source detection in patients with obscure gastrointestinal bleeding (OGIB) who underwent double balloon enteroscopy (DBE) after pre-procedure imaging [multiphase computed tomography enterography (MPCTE), video capsule endoscopy (VCE), or both] and assess the impact of imaging on DBE diagnostic yield. METHODS: Retrospective cohort study using a prospectively maintained database of all adult patients presenting with OGIB who underwent DBE from September 1(st), 2002 to June 30(th), 2013 at a single tertiary center...
January 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28211282/signet-ring-cell-carcinoma-of-the-jejunum-an-uncommon-finding-within-the-reach-of-capsule-endoscopy
#4
José Francisco Juanmartiñena, Marta Montes, Ignacio Fernández-Urién
An 80 year-old female presented with ductal breast carcinoma (stage II) three years ago, complained of asthenia and iron-deficiency anemia. No diagnosis was obtained after conventional endoscopy and iron supplements were indicated. Ten months later visible digestive hemorrhage was presented. Upper and lower endoscopy was repeated but non-diagnosis was obtained. Thus, video capsule endoscopy was indicated identifying a stenotic lesion arising in the mucosa of distal jejunum. Histopathological examination revealed a poorly mucinous differentiated signet-ring cell adenocarcinoma with an intense peri-tumoral lymphoid (Crohn´s-like lymphoid reaction) and lympho-vascular infiltration with no nodal metastases (pT3N0;7ª edition TNM classification)...
February 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28193167/helicobacter-pylori-prevalence-and-clinical-significance-in-patients-with-quiescent-crohn-s-disease
#5
Adi Lahat, Uri Kopylov, Sandra Neuman, Nina Levhar, Doron Yablecovitch, Benjamin Avidan, Batia Weiss, Shomron Ben-Horin, Rami Eliakim
BACKGROUND: Helicobacter pylori (HP) infection is present in about 50% of the global population, and is associated with chronic gastritis, peptic disease and gastric malignancies. HP prevalence in Crohn's disease (CD) patients was shown to be low compared to the general population, and its influence on disease activity is yet to be determined. Our aims were to determine the prevalence of HP in a selected group of CD patients with quiescent disease, and to assess the influence of its eradication on disease activity and endoscopic and laboratory activity measures...
February 13, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28160514/deep-learning-for-polyp-recognition-in-wireless-capsule-endoscopy-images
#6
Yixuan Yuan, Max Q-H Meng
PURPOSE: Wireless Capsule Endoscopy (WCE) enables physicians to examine the digestive tract without any surgical operations, at the cost of a large volume of images to be analyzed. In the computer-aided diagnosis of WCE images, the main challenge arisesfrom the difficulty of robust characterization of images. This study aims to provide dis-criminative description of WCE images and assist physicians to recognize polyp images automatically. METHODS: We propose a novel deep feature learning method, named stacked sparse autoencoder with image manifold constraint (SSAEIM), to recognize polyps in the WCE images...
February 4, 2017: Medical Physics
https://www.readbyqxmd.com/read/28103205/is-the-use-of-agile-patency-capsule-prior-to-videocapsule-endoscopy-useful-in-all-patients-with-spondyloarthritis
#7
Andrada Gheorghe, Denise Carmen Mihaela Zahiu, Theodor Alexandru Voiosu, Bogdan Radu Mateescu, Mihail Radu Voiosu, Mihai Rimbaş
BACKGROUND AND AIMS: As already known, spondyloarthritis patients present a striking resemblance in intestinal inflammation with early Crohn's disease. Moreover, the frequent use of nonsteroidal anti-inflammatory drugs is an important part of their treatment. Both conditions could lead to intestinal stenoses. Therefore we proposed to investigate the usefulness of the patency capsule test in patients with spondyloarthritis. MATERIAL AND METHODS: 64 consecutive patients (33 males; mean age 38 ± 11 years) that fulfilled the AMOR criteria for seronegative spondyloarthropathy (59...
January 18, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/28071061/validation-of-spice-a-method-of-differentiating-small-bowel-submucosal-lesions-from-innocent-bulges-on-capsule-endoscopy
#8
Jaime P Rodrigues, Rolando Pinho, Adélia Rodrigues, Joana Silva, Ana Ponte, Mafalda Sousa, João Carvalho
BACKGROUND AND AIMS: Small bowel submucosal lesions (SBSL) and innocent bulges may have an identical appearance and be difficult to distinguish on small bowel capsule endoscopy (SBCE). Recently, Pirelli et al. proposed a score, smooth, protruding lesion index on capsule endoscopy (SPICE), in order to differentiate between the two. We aimed to evaluate and validate SPICE as a differentiation method between innocent bulges and SBSLs. METHODS: We evaluated all SBCEs performed in our department between January 2005 and September 2015, and selected the ones with a smooth, round, protruding lesion in the small bowel...
January 10, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28069475/retention-associated-with-video-capsule-endoscopy-systematic-review-and-meta-analysis
#9
REVIEW
Mona Rezapour, Chidi Amadi, Lauren Gerson
BACKGROUND: Video capsule endoscopy (VCE) has become a major diagnostic tool for small-bowel evaluation. However, retention of the video capsule endoscope remains a major concern. METHODS: We performed a systematic review of VCE retention rates using Pubmed and SCOPUS (1995-2015). We included studies that enrolled at least 10 subjects, included VCE retention rates, and separated retention rates by indication. We used Comprehensive Meta-Analysis (Version 3.0) to calculate pooled prevalence rates with 95% confidence intervals and assessed heterogeneity using Cochran's Q statistic...
January 6, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28063287/clinical-practice-guidelines-for-the-use-of-video-capsule%C3%A2-endoscopy
#10
Robert A Enns, Lawrence Hookey, David Armstrong, Charles N Bernstein, Steven J Heitman, Christopher Teshima, Grigorios I Leontiadis, Frances Tse, Daniel Sadowski
BACKGROUND & AIMS: Video capsule endoscopy (CE) provides a noninvasive option to assess the small intestine, but its use with respect to endoscopic procedures and cross-sectional imaging varies widely. The aim of this consensus was to provide guidance on the appropriate use of CE in clinical practice. METHODS: A systematic literature search identified studies on the use of CE in patients with Crohn's disease, celiac disease, gastrointestinal bleeding, and anemia...
January 4, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28042386/endoscopic-evaluation-in-diagnosis-and-management-of-inflammatory-bowel-disease
#11
REVIEW
Carthage P Moran, Barra Neary, Glen A Doherty
Endoscopy is a keystone in the management of patients with inflammatory bowel disease (IBD). It is the fundamental diagnostic tool for IBD, and can help discern between ulcerative colitis and Crohn's disease. Endoscopic assessment provides an objective end point in clinical trials, and identifies patients in clinical practice who may benefit from treatment escalation and may assist risk stratification in patients seeking to discontinue therapy. Recent advances in endoscopic assessment of patients with IBD include video capsule endoscopy, and chromoendoscopy...
December 16, 2016: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28018097/contraindications-for-video-capsule-endoscopy
#12
REVIEW
Dirk Bandorski, Niehls Kurniawan, Peter Baltes, Reinhard Hoeltgen, Matthias Hecker, Dominik Stunder, Martin Keuchel
Video capsule endoscopy (VCE) has been applied in the last 15 years in an increasing field of applications. Although many contraindications have been put into perspective, some precautions still have to be considered. Known stenosis of the gastrointestinal tract is a clear contraindication for VCE unless surgery is already scheduled or at least has been considered as an optional treatment modality. In patients with a higher incidence of stenosis, as in an established diagnosis of Crohn's disease, clinical signs of obstruction, prior radiation or surgical small bowel resection, a preceding test with the self-dissolving patency capsule can override this contraindication...
December 7, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28008400/obscure-overt-gastrointestinal-bleeding-secondary-to-ventral-hernioplasty-mesh-small-bowel-perforation-visualized-with-video-capsule-endoscopy
#13
Yumi Mendez-Ishizaki, Javier L Parra
We report a case of a 79-year-old female presenting with hematemesis and melena 9 years after ventral hernioplasty with mesh. After initial normal endoscopy and colonoscopy, video capsule endoscopy revealed a metallic wire mesh perforating the jejunum. Abdominal computed tomography did not identify a perforation although metallic mesh was visualized close to the small bowel. We present the first ventral hernia mesh perforation diagnosed via video capsule endoscopy. Such a finding emphasizes the importance of a complete diagnostic workup when approaching a patient with obscure overt gastrointestinal bleeding...
August 2016: ACG Case Reports Journal
https://www.readbyqxmd.com/read/28007576/rifaximin-reduces-number-and-severity-of-intestinal-lesions-associated-with-use-of-non-steroidal-anti-inflammatory-drugs-in-humans
#14
Carmelo Scarpignato, Werner Dolak, Angel Lanas, Peter Matzneller, Cecilia Renzulli, Maria Grimaldi, Markus Zeitlinger, Ingvar Bjarnason
The intestinal microbiota might contribute to enteropathy associated with use of non-steroidal anti-inflammatory drugs (NSAIDs), but there have been few human studies of this association. We performed a placebo-controlled study to determine whether a delayed release antibiotic formulation (rifaximin-EIR) prevented development of intestinal lesions in persons taking daily NSAIDs. Sixty healthy volunteers (median age 26 years, 42% female) were given the NSAID diclofenac (75 mg twice daily) plus omeprazole (20 mg once daily), and either rifaximin-EIR (400 mg) or placebo, twice daily for 14 days...
December 19, 2016: Gastroenterology
https://www.readbyqxmd.com/read/27990484/initial-experience-of-video-capsule-endoscopy-after-intestinal-transplantation
#15
Jonas Varkey, Mihai Oltean, Andreas Bernd Pischel, Magnus Simrén, Gustaf Herlenius
BACKGROUND: Intestinal transplantation is a procedure which inflicts immunological and infectious complications that affect the transplanted graft, posing both diagnostic and therapeutic challenges. Video capsule endoscopy (VCE) offers easy access to the entire small intestine and presents itself as an interesting option. However, at present, no studies evaluating the usefulness of video capsule endoscopies in this setting have been published. Our aim was to evaluate the usefulness of VCE in detecting complications that arise after intestinal transplantation...
December 2016: Transplantation Direct
https://www.readbyqxmd.com/read/27986111/is-it-a-prime-time-for-small-bowel-colon-video-capsule-endoscopy-to-cover-both-sides-of-the-ileocecal-valve-in-crohn-s%C3%A2-disease
#16
EDITORIAL
Bo Shen
No abstract text is available yet for this article.
January 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27986110/preparation-for-video-capsule-endoscopy-a-clear-choice
#17
EDITORIAL
Christopher A Marshall, David R Cave
No abstract text is available yet for this article.
January 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27936267/automatic-blood-detection-in-capsule-endoscopy-video
#18
Adam Novozámský, Jan Flusser, Ilja Tachecí, Lukáš Sulík, Jan Bureš, Ondrej Krejcar
No abstract text is available yet for this article.
December 1, 2016: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/27908516/small-bowel-bleeding-updated-algorithm-and-outcomes
#19
REVIEW
Lauren B Gerson
Patients previously classified with "obscure gastrointestinal hemorrhage" should now be classified as "suspected small bowel bleeding" according to the 2015 American College of Gastroenterology guidelines. This article provides algorithms for how to manage patients with suspected small bowel bleeding, including utilization of second-look endoscopy and/or colonoscopy, video capsule endoscopy, computed tomographic enterography, magnetic resonance enterography, angiography, and deep enteroscopy.
January 2017: Gastrointestinal Endoscopy Clinics of North America
https://www.readbyqxmd.com/read/27908514/video-capsule-endoscopy-technology-reading-and-troubleshooting
#20
REVIEW
Jodie A Barkin, Jamie S Barkin
Video capsule endoscopy (VCE) has completed the endoscopic visualization of the entire luminal gastrointestinal tract. VCE can be performed in inpatients and outpatients, requires appropriate bowel preparation before the study, and can be administered via oral swallowing or endoscopic device placement into the small bowel based on outlined patient-dependent factors. Current commercially available VCE systems were reviewed and compared for individual features and attributes. This article focuses on preparation for VCE, currently available VCE technology, how to read a VCE study, and risks and contraindications to VCE...
January 2017: Gastrointestinal Endoscopy Clinics of North America
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