|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Small-bowel capsule endoscopy: A ten-point contemporary review显示文摘The introduction of capsule endoscopy (CE) in clinical practice increased the interest for the study of the small-bowel. Consequently, in about 10 years, an impressive quantity of literature on indications, diagnostic yield (DY), safety profile and technical evolution of CE has been published as well as several reviews. At present time, there are 5 small-bowel capsule enteroscopy (SBCE) models in the worldwide market. Head-to-head trials have showed in the great majority of studies comparable results in terms of DY, image quality and completion rate. CE meta-analyses formed the basis of national/international guidelines; these guidelines place CE in a prime position for the diagnostic work-up of patients with obscure gastrointestinal bleeding, known and/or suspected Crohn's disease and possible small-bowel neoplasia. A 2-L polyethylene glycol-based purge, administered the day before the procedure,is the most widely practiced preparation regimen. Whether this regimen can be further improved (i.e. , by further decreasing its volume, changing the timing of administration, coupling it with prokinetics and/or other factors) or if it can really affect the DY, is still under discussion. Faecal calprotectin has been used in SBCE studies in two settings: in patients taking non-steroidal anti-inflammatory drugs, to evaluate the type and extent of mucosal damage and, more importantly from a clinical point of view, in patients with known or suspected Crohn's disease for assessment of inflam-mation activity. Although there is still a lot of debate around the exact reasons of SBCE poor performance in various small-bowel segments, it is worth to remember that the capsule progress is non-steerable, hence more rapid in the proximal than in lower segments of the small-bowel. Capsule aspiration, a relatively unexpected complication, has been reported with increasing frequency. This is probably related with the increase in the mean age of patients undergoing CE. CE video review is a time-consuming procedure. Therefore, several attempts have been made to develop technical software features, in order to make CE video analysis easier and shorter (without jeopardizing its accuracy). Suspected Blood Indicator, QuickView and Fujinon Intelligent Chromo Endoscopy are some of the software tools that have been checked in various clinical studies to date. | Anastasios Koulaouzidis Emanuele Rondonotti Alexandros Karargyris | 2013 | World Journal of Gastroenterology2013，19，24： | 14 |
| 2 | Video capsule endoscopy:Perspectives of a revolutionary technique显示文摘Video capsule endoscopy(VCE)was launched in 2000and has revolutionized direct endoscopic imaging of the gut.VCE is now a first-line procedure for exploring the small bowel in cases of obscure digestive bleeding and is also indicated in some patients with Crohn’s disease,celiac disease,and polyposis syndrome.A video capsule has also been designed for visualizing the esophagus in order to detect Barrett’s esophagus or esophageal varices.Different capsules are now available and differ with regard to dimensions,image acquisition rate,battery life,field of view,and possible optical enhancements.More recently,the use of VCE has been extended to exploring the colon.Within the last 5 years,tremendous developments have been made toward increasing the capabilities of the colon capsule.Although colon capsule cannot be proposed as a first-line colorectal cancer screening procedure,colon capsule may be used in patients with incomplete colonoscopy or in patients who are unwilling to undergo colonoscopy.In the near future,new technological developments will improve the diagnostic yield of VCE and broaden its therapeutic capabilities. | Simon Bouchard Mostafa Ibrahim Andre Van Gossum | 2014 | World Journal of Gastroenterology2014，20，46： | 12 |
| 3 | Capsule endoscopy:Present status and future expectation显示文摘Video capsule endoscopy(CE)since its introduction 13years back,has revolutionized our approach to small intestinal diseases.Obscure gastrointestinal bleed(OGIB)continues to be the most important indication for CE with a high sensitivity,specificity as well as positive and negative predictive values.It is best performed during ongoing bleed or immediately thereafter.Overt OGIB has a higher diagnostic yield than occult OGIB.However,even in iron deficiency anemia,CE is emerging as important investigation after initial negative work up.In suspected Crohn’s disease(CD),CE has been shown superior to traditional imaging and endoscopic technique and should be considered after a negative ileocolonoscopy.Although CE has also been used for evaluating established CD,a high capsule retention rate precludes its use ahead of cross-sectional imaging.Celiac disease,particularly where gastro-duodenoscopy cannot be performed or is normal,can also be investigated by CE.Small bowel tumor,hereditary polyposis syndrome,and non-steroidal anti-inflammatory drugs induced intestinal damage are other indications for CE.Capsule retention is the only significant adverse outcome of CE and occurs mostly in presence of intestinal obstruction.This can be prevented by use of Patency capsule prior to CE examination.Presence of cardiac pacemaker and intracardiac devices continue to be relative contraindications for CE,though data do not suggest interference of CE with these devices.Major limitations of CE today include failure to control its movement from outside,inability of CE to acquire tissue for diagnosis,and lack of therapeutic help.With ongoing interesting and exciting developments taking place in these areas,these issues would be solved in all probability in near future.CE has the potential to become one of the most important tools in diagnostic and possibly in the therapeutic field of gastrointestinal disorder. | Mahesh K Goenka Shounak Majumder Usha Goenka | 2014 | World Journal of Gastroenterology2014，20，29： | 9 |
| 4 | Capsule endoscopy:Current practice and future directions显示文摘Capsule endoscopy(CE)has transformed investigation of the small bowel providing a non-invasive,well tolerated means of accurately visualising the distal duodenum,jejunum and ileum.Since the introduction of small bowel CE thirteen years ago a high volume of literature on indications,diagnostic yields and safety profile has been presented.Inclusion in national and international guidelines has placed small bowel capsule endoscopy at the forefront of investigation into suspected diseases of the small bowel.Most commonly,small bowel CE is used in patients with suspected bleeding or to identify evidence of active Crohn’s disease(CD)(in patients with or without a prior history of CD).Typically,CE is undertaken after upper and lower gastrointestinal flexible endoscopy has failed to identify a diagnosis.Small bowel radiology or a patency capsule test should be considered prior to CE in those at high risk of strictures(such as patients known to have CD or presenting with obstructive symptoms)to reduce the risk of capsule retention.CE also has a role in patients with coeliac disease,suspected small bowel tumours and other small bowel disorders.Since the advent of small bowel CE,dedicated oesophageal and colon capsule endoscopes have expanded the fields of application to include the investigation of upper and lower gastrointestinal disorders.Oesophageal CE may be used to diagnose oesophagitis,Barrett’s oesophagus and varices but reliability in identifying gastroduodenal pathology is unknown and it does not have biopsy capability.Colon CE provides an alternative to conventional colonoscopy for symptomatic patients,while a possible role in colorectal cancer screening is a fascinating prospect.Current research is already addressing the possibility of controlling capsule movement and developing capsules which allow tissue sampling and the administration of therapy. | Melissa F Hale Reena Sidhu Mark E McAlindon | 2014 | World Journal of Gastroenterology2014，20，24： | 9 |
| 5 | Recommendations to quantify villous atrophy in video capsule endoscopy images of celiac disease patients显示文摘AIM To quantify the presence of villous atrophy in endoscopic images for improved automation.METHODS There are two main categories of quantitative descriptors helpful to detect villous atrophy:(1) Statistical and(2) Syntactic. Statistical descriptors measure the small intestinal substrate in endoscope-acquired images based on mathematical methods. Texture is the most commonly used statistical descriptor to quantify villous atrophy. Syntactic descriptors comprise a syntax, or set of rules, for analyzing and parsing the substrate into a set of objects with boundaries. The syntax is designed to identify and distinguish three-dimensional structures based on their shape.RESULTS The variance texture statistical descriptor is useful to describe the average variability in image gray level representing villous atrophy, but does not determine the range in variability and the spatial relationships between regions. Improved textural descriptors will incorporate these factors, so that areas with variability gradients and regions that are orientation dependent can be distinguished. The protrusion syntactic descriptor is useful to detect three-dimensional architectural components, but is limited to identifying objects of a certain shape. Improvement in this descriptor will require incorporating flexibility to the prototypical template, so that protrusions of any shape can be detected, measured, and distinguished.CONCLUSION Improved quantitative descriptors of villous atrophy are being developed, which will be useful in detecting subtle, varying patterns of villous atrophy in the small intestinal mucosa of suspected and known celiac disease patients. | Edward J Ciaccio Govind Bhagat Suzanne K Lewis Peter H Green | 2016 | World Journal of Gastrointestinal Endoscopy2016，8，18： | 3 |
| 6 | Three-dimensional image reconstruction in capsule endoscopy显示文摘To date,limited research has been carried out in developing methods and materials that offer three-dimensional(3-D) representation of the digestive tract.In the field of capsule endoscopy(CE),hardware approaches have been developed that provide real time both 3-D information and texture using an infrared projector and a complementary metal oxide semiconductor camera.The major drawbacks of this system are its size,power consumption and packaging issues.A software approach to approximate a 3-D representation of digestive tract surface utilising current CE technology has been proposed.The algorithm utilizes the Shape from Shading technique and seem to provide promising results for polypoid structures and angioectasias.Further clinical evaluation is currently under way. | Anastasios Koulaouzidis Alexandros Karargyris | 2012 | World Journal of Gastroenterology2012，18，31： | 3 |
| 7 | 放大色素内镜对结直肠肿瘤病灶形态及性质的判断价值显示文摘目的:探讨放大色素内镜在判断结直肠肿瘤病灶形态与性质中的应用价值.方法:选取2010-03/2013-02于承德医学院附属医院接受内镜下黏膜切除术的结直肠肿瘤患者91例,内镜检查中采用放大色素内镜将有凹陷的病灶分为1型凹陷与2型凹陷,并根据内镜下黏膜切除术后的病理诊断判断病灶的形态与性质.结果:不同组织学分类病灶的形态学分布比较差异无统计学意义(P>0.05);2型凹陷的病灶中高度异型增生与腺癌所占的比例明显高于1型凹陷的病灶(81.3%vs 31.0%,χ2=10.405,P=0.001);1型凹陷的病灶中浸润深度位于黏膜层或黏膜下浅层的比例明显高于2型病灶(92.6%vs 50.0%,χ2=10.6,P=0.001).结论:放大色素内镜能够通过结直肠肿瘤表面的凹陷程度对病灶的性质及浸润深度进行判断,可为内镜下黏膜切除术提供临床依据. | 计小清 孙超 赵凤荣 辛丽娟 | 2014 | 世界华人消化杂志2014，22，25： | 1 |
| 8 | Virtual chromoendoscopy in small bowel capsule endoscopy: New light or a cast of shadow?显示文摘AIM: To evaluate whether virtual chromoendoscopy can improve the delineation of small bowel lesions previously detected by conventional white light small bowel capsule endoscopy(SBCE). METHODS: Retrospective single center study. One hundred lesions selected from forty-nine consecutive conventional white light SBCE(SBCE-WL) examinations were included. Lesions were reviewed at three Flexible Spectral Imaging Color Enhancement(FICE) settings and Blue Filter(BF) by two gastroenterologists with ex-perience in SBCE, blinded to each other's findings, whoranked the quality of delineation as better, equivalent or worse than conventional SBCE-WL. Inter-observer percentage of agreement was determined and analyzed with Fleiss Kappa(k) coefficient. Lesions selected for the study included angioectasias(n = 39), ulcers/ero-sions(n = 49) and villous edema/atrophy(n = 12). RESULTS: Overall, the delineation of lesions was im-proved in 77% of cases with FICE 1, 74% with FICE 2, 41% with FICE 3 and 39% with the BF, with a percent-age of agreement between investigators of 89%(k = 0.833), 85%(k = 0.764), 66%(k = 0.486) and 79%(k = 0.593), respectively. FICE 1 improved the delineation of 97.4% of angioectasias, 63.3% of ulcers/erosions and 66.7% of villous edema/atrophy with a percentage of agreement of 97.4%(k = 0.910), 81.6%(k = 0.714) and 91.7%(k = 0.815), respectively. FICE 2 improved the delineation of 97.4% of angioectasias, 57.1% of ulcers/erosions and 66.7% of villous edema/atrophy, with a percentage of agreement of 89.7%(k = 0.802), 79,6%(k = 0.703) and 91.7%(k = 0.815), respectively. FICE 3 improved the delineation of 46.2% of angioecta-sias, 24.5% of ulcers/erosions and none of the cases of villous edema/atrophy, with a percentage of agreement of 53.8% [k = not available(NA)], 75.5%(k = NA) and 66.7%(k = 0.304), respectively. The BF improved the delineation of 15.4% of angioectasias, 61.2% of ulcers/erosions and 25% of villous edema/atrophy, with a per-centage of agreement of 76.9%(k = 0.558), 81.6%(k = 0.570) and 25.0%(k = NA), respectively.CONCLUSION: Virtual chromoendoscopy can improve the delineation of angioectasias, ulcers/erosions and villous edema/atrophy detected by SBCE, with almost perfect interobserver agreement for FICE 1. | José Cotter Joana Magalh es Francisca Dias de Castro Mara Barbosa Pedro Boal Carvalho Sílvia Leite Maria Jo o Moreira Bruno Rosa | 2014 | World Journal of Gastrointestinal Endoscopy2014，6，8： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员