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Abstract
Celiac disease predominantly involves the proximal small bowel, but villus atrophy can be patchy, spare the duodenum, and be present more distally. Video capsule endoscopy is more sensitive than standard endoscopy to detect villus atrophy, and can define extent of disease, though it cannot obtain biopsies. Duodenal biopsy is the gold standard for diagnosis. Video capsule endoscopy assists in special circumstances when biopsy is not possible, and in equivocal diagnosis. Video capsule endoscopy and enteroscopy are recommended for evaluating complicated celiac disease, especially refractory celiac disease type II. Future developments include computer-assisted capsule programs and advanced capsule and enteroscope design.
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Affiliation(s)
- Suzanne K Lewis
- Division of Digestive Diseases, Celiac Disease Center at Columbia University, Columbia University, 180 Fort Washington Avenue, New York, NY 10032, USA.
| | - Carol E Semrad
- The University of Chicago, 5841 South Maryland Avenue, MC 4080 S401, Chicago, IL 60637, USA
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Costa AC, Pimenta S, Ribeiro JF, Silva MF, Wolffenbuttel RF, Dong T, Yang Z, Correia JH. PDMS Microlenses for Focusing Light in Narrow Band Imaging Diagnostics. SENSORS 2019; 19:s19051057. [PMID: 30832271 PMCID: PMC6427716 DOI: 10.3390/s19051057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 02/22/2019] [Accepted: 02/24/2019] [Indexed: 11/16/2022]
Abstract
Minimally invasive medical devices can greatly benefit from Narrow Band Imaging (NBI) diagnostic capabilities, as different wavelengths allow penetration of distinct layers of the gastrointestinal tract mucosa, improving diagnostic accuracy and targeting different pathologies. An important performance parameter is the light intensity at a given power consumption of the medical device. A method to increase the illumination intensity in the NBI diagnostic technique was developed and applied to minimally invasive medical devices (e.g., endoscopic capsules), without increasing the size and power consumption of such instruments. Endoscopic capsules are generally equipped with light-emitting diodes (LEDs) operating in the RGB (red, green, and blue) visible light spectrum. A polydimethylsiloxane (PDMS) µ-lens was designed for a maximum light intensity at the target area of interest when placed on top of the LEDs. The PDMS µ-lens was fabricated using a low-cost hanging droplet method. Experiments reveal an increased illumination intensity by a factor of 1.21 for both the blue and green LEDs and 1.18 for the red LED. These promising results can increase the resolution of NBI in endoscopic capsules, which can contribute to early gastric lesions diagnosis.
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Affiliation(s)
- Adriana C Costa
- Chongqing Key Laboratory of Colleges and Universities on Micro-Nano Systems Technology and Smart Transducing, Chongqing Engineering Laboratory for Detection, Institute of Applied Micro-Nano Science and Technology-IAMNST, Control and Integrated System, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Nan'an District,Chongqing 400067, China.
- CMEMS-UMinho, Department of Industrial Electronics, University of Minho, 4800-058 Guimaraes, Portugal.
| | - Sara Pimenta
- CMEMS-UMinho, Department of Industrial Electronics, University of Minho, 4800-058 Guimaraes, Portugal.
| | - João F Ribeiro
- CMEMS-UMinho, Department of Industrial Electronics, University of Minho, 4800-058 Guimaraes, Portugal.
| | - Manuel F Silva
- CMEMS-UMinho, Department of Industrial Electronics, University of Minho, 4800-058 Guimaraes, Portugal.
| | | | - Tao Dong
- Chongqing Key Laboratory of Colleges and Universities on Micro-Nano Systems Technology and Smart Transducing, Chongqing Engineering Laboratory for Detection, Institute of Applied Micro-Nano Science and Technology-IAMNST, Control and Integrated System, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Nan'an District,Chongqing 400067, China.
- Faculty of Technology, Institute for Microsystems-IMS, Natural Sciences and Maritime Sciences, University of South-Eastern Norway (USN), Postboks 235, 3603 Kongsberg, Norway.
| | - Zhaochu Yang
- Chongqing Key Laboratory of Colleges and Universities on Micro-Nano Systems Technology and Smart Transducing, Chongqing Engineering Laboratory for Detection, Institute of Applied Micro-Nano Science and Technology-IAMNST, Control and Integrated System, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Nan'an District,Chongqing 400067, China.
| | - José H Correia
- Chongqing Key Laboratory of Colleges and Universities on Micro-Nano Systems Technology and Smart Transducing, Chongqing Engineering Laboratory for Detection, Institute of Applied Micro-Nano Science and Technology-IAMNST, Control and Integrated System, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Nan'an District,Chongqing 400067, China.
- CMEMS-UMinho, Department of Industrial Electronics, University of Minho, 4800-058 Guimaraes, Portugal.
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Leenhardt R, Li C, Koulaouzidis A, Cavallaro F, Cholet F, Eliakim R, Fernandez-Urien I, Kopylov U, McAlindon M, Németh A, Plevris JN, Rahmi G, Rondonotti E, Saurin JC, Tontini GE, Toth E, Yung D, Marteau P, Dray X. Nomenclature and semantic description of vascular lesions in small bowel capsule endoscopy: an international Delphi consensus statement. Endosc Int Open 2019; 7:E372-E379. [PMID: 30834297 PMCID: PMC6395173 DOI: 10.1055/a-0761-9742] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 08/09/2018] [Indexed: 12/22/2022] Open
Abstract
Background and study aims Nomenclature and descriptions of small bowel (SB) vascular lesions in capsule endoscopy (CE) are scarce in the medical literature. They are mostly based on the reader's opinion and thus differ between experts, with a potential negative impact on clinical care, teaching and research regarding SBCE. Our aim was to better define a nomenclature and to give a description of the most frequent vascular lesions in SBCE. Methods A panel of 18 European expert SBCE readers was formed during the UEGW 2016 meeting. Three experts constructed an Internet-based four-round Delphi consensus, but did not participate in the voting process. They built questionnaires that included various still frames of vascular lesions obtained with a third-generation SBCE system. The 15 remaining participants were asked to rate different proposals and description of the most common SB vascular lesions. A 6-point rating scale (varying from 'strongly disagree' to 'strongly agree') was used successive rounds. The consensus was reached when at least 80 % voting members scored the statement within the 'agree' or 'strongly agree'. Results Consensual terms and descriptions were reached for angiectasia/angiodysplasia, erythematous patch, red spot/dot, and phlebectasia. A consensual description was reached for more subtle vascular lesions tentatively named "diminutive angiectasia" but no consensus was reached for this term. Conclusion An international group has reached a consensus on the nomenclature and descriptions of the most frequent and relevant SB vascular lesions in CE. These terms and descriptions are useful in daily practice, for teaching and for medical research purposes.
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Affiliation(s)
- Romain Leenhardt
- Sorbonne Université & Department of Hepatogastroenterology, APHP, Saint Antoine Hospital, Paris, France,Corresponding author Leenhardt Romain Hopital Saint-Antoine – Gastroenterology and Endoscopic Department184 Rue du Faubourg Saint-AntoineParis 75012France+0033149282000
| | - Cynthia Li
- Sorbonne Université & Department of Hepatogastroenterology, APHP, Saint Antoine Hospital, Paris, France,Drexel University, College of Arts & Sciences, Philadelphia, Pennsylvania, United States
| | - Anastasios Koulaouzidis
- Centre for Liver and Digestive Disorders, The Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
| | - Flaminia Cavallaro
- Gastroenterology & Digestive Endoscopy Unit, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy
| | - Franck Cholet
- Department of Gastrointestinal Endoscopy, Brest Teaching Hospital, Brest, France
| | - Rami Eliakim
- Department of Gastroenterology, Chaim Sheba Medical Center, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | | | - Uri Kopylov
- Department of Gastroenterology, Chaim Sheba Medical Center, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Mark McAlindon
- Academic Unit of Gastroenterology and Hepatology, Sheffield Teaching Hospitals NHS Trust, Sheffield, UK
| | - Artur Németh
- Department of Gastroenterology, Skåne University Hospital, Malmö, Lund University, Sweden
| | - John N. Plevris
- Centre for Liver and Digestive Disorders, The Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
| | - Gabriel Rahmi
- Department of Gastroenterology and Digestive Endoscopy, Georges-Pompidou European Hospital, Paris, France
| | | | | | - Gian Eugenio Tontini
- Gastroenterology & Endoscopy Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Ervin Toth
- Department of Gastroenterology, Skåne University Hospital, Malmö, Lund University, Sweden
| | - Diana Yung
- Centre for Liver and Digestive Disorders, The Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
| | - Philippe Marteau
- Sorbonne Université & Department of Hepatogastroenterology, APHP, Saint Antoine Hospital, Paris, France
| | - Xavier Dray
- Sorbonne Université & Department of Hepatogastroenterology, APHP, Saint Antoine Hospital, Paris, France
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