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Capsule endoscopy

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https://www.readbyqxmd.com/read/28335384/localization-and-tracking-of-implantable-biomedical-sensors
#1
REVIEW
Ilknur Umay, Barış Fidan, Billur Barshan
Implantable sensor systems are effective tools for biomedical diagnosis, visualization and treatment of various health conditions, attracting the interest of researchers, as well as healthcare practitioners. These systems efficiently and conveniently provide essential data of the body part being diagnosed, such as gastrointestinal (temperature, pH, pressure) parameter values, blood glucose and pressure levels and electrocardiogram data. Such data are first transmitted from the implantable sensor units to an external receiver node or network and then to a central monitoring and control (computer) unit for analysis, diagnosis and/or treatment...
March 13, 2017: Sensors
https://www.readbyqxmd.com/read/28333772/video-capsule-endoscopy-to-diagnose-primary-intestinal-lymphangiectasia-in-a-14-month-old-child
#2
S M van der Reijden, M P van Wijk, M A J M Jacobs, T G J de Meij
No abstract text is available yet for this article.
March 22, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28318326/optimal-use-of-polyethylene-glycol-for-preparation-of-small-bowel-video-capsule-endoscopy-a-network-meta-analysis
#3
Shan Wu, Yun-Jie Gao, Zhi-Zheng Ge
OBJECTIVE: Standardized strategy of bowel preparation before video capsule endoscopy (VCE) remains controversial. We aimed to assess the ideal dose of PEG based on small bowel visualization quality (SBVQ), diagnostic yield (DY) and complete rate (CR) of VCE using a network meta-analysis (NMA) of randomized controlled trials (RCTs). METHODS: This NMA included RCTs comparing any of the following bowel preparation interventions for VCE: fasting overnight ('Fast'), 1 liter PEG ('PEG 1L'), 2-liter PEG ('PEG 2L'), or 4-liter PEG ('PEG 4L')...
March 20, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28295697/diagnostic-capability-of-colon-capsule-endoscopy-for-advanced-colorectal-cancer-a-pilot-study
#4
Yumiko Ota, Atsuo Yamada, Yuka Kobayashi, Ryota Niikura, Takayuki Shimpoh, Akiko Narita, Shuntaro Yoshida, Nobumi Suzuki, Hirotsugu Watabe, Yoshihiro Hirata, Soichiro Ishihara, Eiji Sunami, Toshiaki Watanabe, Kazuhiko Koike
OBJECTIVES: Colon capsule endoscopy (CCE) is a safe and effective method for detecting lesions in the colon. However, the sensitivity of CCE in detecting advanced colorectal cancer (CRC) has not been sufficiently evaluated. Therefore, the aim of this study was to assess the sensitivity of CCE in detecting advanced CRC. METHODS: Patients previously diagnosed with advanced CRC by conventional colonoscopy underwent CCE. The primary outcome measure was the sensitivity of CCE in detecting advanced CRC per patient and per lesion...
March 10, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28295515/two-cases-of-melanomas-paradoxically-metastasizing-to-the-intestinal-tract-during-nivolumab-therapy
#5
Hajime Miyazawa, Teruki Yanagi, Yasuyuki Yamaguchi, Keisuke Imafuku, Shinya Kitamura, Hiroo Hata, Jiro Uehara, Nobuki Ichikawa, Yosuke Ohno, Tadashi Yoshida, Shigenori Homma, Hideki Kawamura, Akinobu Taketomi, Hiroshi Shimizu
We report two cases of melanomas in patients who developed intestinal metastasis despite other metastatic sites responding to nivolumab and despite the patients having favorable findings such as vitiligo and normal lactate dehydrogenase. The first case is an 85-year-old man who had been administrated nivolumab for lung/cutaneous metastases. After 22 courses of nivolumab therapy, fever and anorexia had appeared and his bodyweight had decreased. An intussusception on the ileocecal valve was revealed by computed tomography, and emergency surgery revealed metastatic lesions on the colon...
March 11, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28286556/prospective-study-of-factors-important-to-achieve-observation-of-the-entire-colon-on-colon-capsule-endoscopy
#6
Junichi Sato, Masanao Nakamura, Osamu Watanabe, Takeshi Yamamura, Kohei Funasaka, Eizaburo Ohno, Ryoji Miyahara, Hiroki Kawashima, Hidemi Goto, Yoshiki Hirooka
BACKGROUND: Colon capsule endoscopy (CCE) is a procedure in which capsule swallowing facilitates observation of the lumen of the entire digestive tract. It does not require an air supply, and is a noninvasive procedure with a markedly low risk of adverse events in comparison with conventional colonoscopy (CS). It reduces patient stress, and may be acceptable to patients. A limitation of this procedure is that the entire colon observation rate (CCE excretion rate, completed CCE rate) is not 100%...
January 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28286191/increased-intestinal-permeability-in-relatives-of-patients-with-crohn-s-disease-is-not-associated-with-small-bowel-ulcerations
#7
Christopher W Teshima, Karen J Goodman, Mohamed El-Kalla, Samina Turk, Wael El-Matary, Rosica Valcheva, Ronda Danchak, Marilyn Gordon, Peter Ho, Amanda Mullins, Daniel Wong, Dina Kao, Jonathan Meddings, Hien Huynh, Levinus A Dieleman
BACKGROUND & AIMS: Many first-degree relatives of patients with Crohn's disease (CD) have increased intestinal permeability. Video capsule endoscopy (VCE) is the most sensitive imaging test to identify small bowel mucosal lesions that indicate subclinical CD. We aimed to estimate the association of increased intestinal permeability with small bowel ulcerations detectable by VCE in healthy first-degree relatives of patients with CD. METHODS: We conducted a cross-sectional study of 223 healthy, asymptomatic first-degree relatives of patients with CD (parents, siblings, and children; 9-45 years old) enrolled at the University of Alberta between 2009 and 2012...
March 7, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28281203/recent-advances-in-non-invasive-esophageal-tissue-sampling
#8
REVIEW
David A Katzka
PURPOSE OF REVIEW: The costs to society and accuracy of screening for esophageal cancer and other esophageal diseases with standard endoscopy are formidable. As a result, the applicability of endoscopy as a general screening tool has been challenged. RECENT FINDINGS: To maintain accuracy but reduce the price of endoscopy on society, multiple adjunct or replacement technologies are being developed that are less expensive and more easily applied. These devices include image-enhancing techniques that more reliably identify dysplasia and cancer reducing the need for extensive biopsy sampling during standard endoscopy...
March 2017: Current Gastroenterology Reports
https://www.readbyqxmd.com/read/28280628/multiple-angiodysplasia-diagnosed-by-capsule-endoscopy
#9
Giulia Diamantini, Giovanni Battista Levi Sandri, Fabio Procacciante
A 28-year-old Caucasian man was admitted in our unit for acute massive rectal bleeding. Past medical and family history was unremarkable. Hemoglobin was 7.6 g/dL. Blood transfusions were required. Computed tomography and gastrointestinal endoscopy were negative for active bleeding. When patient's hemoglobin was normalized and stable, a video capsule endoscopy was performed. Video relieved the presence of multiple digiunal and ileal angiodysplastic lesions. A double endoscopic argon plasma coagulation procedure was planned on general anaesthesia...
February 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28279616/-when-and-how-should-small-bowel-capsule-endoscopy-be-used-in-children
#10
J Viala, L Michaud, M Bellaiche, A Lachaux
Small-bowel capsule endoscopy (CE) has recently been used in children. During the past few years, an intense research activity has defined the advantages and limitations of CE. Its uses have been established in several small-bowel pathologies such as obvious or obscure digestive bleeding, Crohn disease, and hereditary polyposis. Although the absence of biopsy reduces the specificity of CE findings, small-bowel exploration using CE achieves better accuracy in detecting lesions than most radiological examinations...
March 6, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28271948/successful-adalimumab-treatment-and-usefulness-of-capsule-endoscopy-for-gut-inflammation-concomitant-with-ankylosing-spondylitis
#11
Shinji Ota, Hirotake Sakuraba, Hiroto Hiraga, Keisuke Hasui, Miwa Satake, Norihiro Hanabata, Yui Akemoto, Rina Watanabe, Nahoko Tanaka, Yoh Ishiguro, Masanori Tanaka, Shinsaku Fukuda
Here we describe a 20-year-old man with ankylosing spondylitis and gut inflammation, who was successfully treated with adalimumab. Capsule endoscopy and ileocolonoscopy showed multiple erosions and aphthoid ulcers in the ileum and the ileocecal valve. Immunohistochemical analysis of the terminal ileum demonstrated that the number of IL-23p19 expressing macrophages was increased. Adalimumab was administered, and his back pain and abdominal symptoms improved. Adalimumab might be an effective treatment for gut inflammation related to ankylosing spondylitis...
March 8, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28268954/in-to-out-body-path-loss-for-wireless-radio-frequency-capsule-endoscopy-in-a-human-body
#12
G Vermeeren, E Tanghe, A Thielens, L Martens, W Joseph
Physical-layer characterization is important for design of in-to-out body communication for wireless body area networks (WBANs). This paper numerically investigates the path loss of an in-to-out body radio frequency (RF) wireless link between an endoscopy capsule and a receiver outside the body using a 3D electromagnetic solver. A spiral antenna in the endoscopy capsule is tuned to operate in the Medical Implant Communication Service (MICS) band at 402 MHz, accounting for the properties of the human body. The influence of misalignment, rotation of the capsule, and human body model are investigated...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268733/hardware-image-assessment-for-wireless-endoscopy-capsules
#13
M A Khorsandi, N Karimi, S Samavi, M Hajabdollahi, S M R Soroushmehr, K Ward, K Najarian
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/28268536/segmentation-of-angiodysplasia-lesions-in-wce-images-using-a-map-approach-with-markov-random-fields
#14
Pedro M Vieira, Bruno Goncalves, Carla R Goncalves, Carlos S Lima
This paper deals with the segmentation of angiodysplasias in wireless capsule endoscopy images. These lesions are the cause of almost 10% of all gastrointestinal bleeding episodes, and its detection using the available software presents low sensitivity. This work proposes an automatic selection of a ROI using an image segmentation module based on the MAP approach where an accelerated version of the EM algorithm is used to iteratively estimate the model parameters. Spatial context is modeled in the prior probability density function using Markov Random Fields...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268409/a-deep-convolutional-neural-network-for-bleeding-detection-in-wireless-capsule-endoscopy-images
#15
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/28268316/improving-resolution-of-robotic-capsule-locomotion-using-dynamic-electromagnetic-field
#16
Fahad N Alsunaydih, Jean-Michel Redoute, Mehmet R Yuce
This paper describes a new method to control the motion of swallowable wireless capsule endoscopy devices. A dynamic magnetic field produced by a set of external magnetic coils is used to manage the locomotion of the capsule. A permanent magnet is embedded into the capsule in order to manipulate the capsule by changing the external magnetic field strength for each specific position. The dynamic magnetic field is externally controlled to reach and maintain the equilibrium state for holding the capsule in a specific location...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28265285/accuracy-of-colon-capsule-endoscopy-in-detecting-colorectal-polyps-in-individuals-with-familial-colorectal-cancer-could-we-avoid-colonoscopies
#17
Cristina Alvarez-Urturi, Gloria Fernández-Esparrach, Inés Ana Ibáñez, Cristina Rodríguez De Miguel, Josep Maria Dedeu, Xavier Bessa, Henry Córdova, Maria Pellisé, Francesc Balaguer, Angels Ginés, Luis Barranco, Isis K Araujo, Montserrat Andreu, Josep Llach, Antoni Castells, Begoña González-Suarez
Background. Individuals with a family history of colorectal cancer (CRC) have an increased risk of CRC. We evaluated the diagnostic yield of CCE in the detection of lesions and also two different colon preparations. Methods. A prospective multicenter study was designed to assess CCE diagnostic yield in a cohort of asymptomatic individuals with a family history of CRC. CCE and colonoscopy were performed on the same day by 2 endoscopists who were blinded to the results of the other procedure. Results. Fifty-three participants were enrolled...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28261770/what-is-the-clinical-yield-of-capsule-endoscopy-in-the-management-of-obscure-bleeding-in-emergency-service
#18
Muhammed Zübeyr Üçüncü, Süleyman Bademler, Mehmet İlhan, Ali Fuat Kaan Gök, Filiz Akyüz, Recep Güloğlu
BACKGROUND: The aim of this study was to investigate the efficacy of capsule endoscopy (CE) performed on patients who presented to emergency room with clinically evident gastrointestinal (GI) bleeding from unknown source and were hospitalized for follow-up. METHODS: Total of 38 patients who underwent CE and were followed-up for evaluation of clinically perceptible GI bleeding with no obvious etiology in Istanbul Medical Faculty emergency surgery department were included in the study...
January 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28258930/the-impact-of-hospitalization-on-the-performance-of-capsule-endoscopy-ce
#19
Heinz Albrecht, Marcel Vetter, Wolfgang Dauth, Flavius Zoicas, Markus Friedrich Neurath, Alexander Fritzkarl Hagel
BACKGROUND: For proper evaluation of capsule endoscopy (CE), a complete examination is necessary. AIM: We evaluated risk factors of an incomplete CE with focus on patient hospitalization. METHODS: We retrospectively evaluated 161 consecutive patients who underwent CE between 01.07.2013 and 13.03.2016. Main indications were active bleeding, iron deficiency anemia (IDA), inflammatory bowel disease (IBD), abdominal pain, and familial adenomatous polyposis (FAP)...
February 20, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28256143/hemolymphangioma-as-a-cause-of-overt-obscure-gastrointestinal-bleeding-a-case-report
#20
Gerardo Blanco Velasco, Amina Tun Abraham, Oscar Hernández Mondragón, Juan Manuel Blancas Valencia
Is a case report of a patient with overt obscure gastrointestinal bleeding due to a mesenteric hemolymphangioma with infiltration to jejunum. Diagnosed by capsule endoscopy and treated with double-balloon enteroscopy and surgery.
March 2017: Revista Española de Enfermedades Digestivas
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