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| 1 | rate of adverse events of gastroduodenal snare polypectomy for non-flat polyp is low: A prospective and multicenter study显示文摘AIM To evaluate the rate of adverse events(AEs) during consecutive gastric and duodenal polypectomies in several Spanish centers. METHODS Polypectomies of protruded gastric or duodenal polyps ≥ 5 mm using hot snare were prospectively included. Prophylactic measures of hemorrhage were allowed in predefined cases. AEs were defined and graded according to the lexicon recommended by the American Society for Gastrointestinal Endoscopy. Patients were followed for 48 h, one week and 1 mo after theprocedure. RESULTS308 patients were included and a single polypectomy was performed in 205. Only 36(11.7%) were on prior anticoagulant therapy. Mean polyp size was 15 ± 8.9 mm(5-60) and in 294 cases(95.4%) were located in the stomach. Hemorrhage prophylaxis was performed in 219(71.1%) patients. Nine patients presented AEs(2.9%), and 6 of them were bleeding(n = 6, 1.9%)(in 5 out of 6 AE, different types of endoscopic treatment were performed). Other 24 hemorrhagic episodes could be managed without any change in the outcome of the endoscopy and, consequently, were considered incidents. We did not find any independent risk factor of bleeding.CONCLUSION Gastroduodenal polypectomy using prophylactic measures has a rate of AEs small enough to consider this procedure a safe and effective method for polyp resection independently of the polyp size and location. | Henry Córdova Lidia Argüello Carme Loras Antonio Naranjo Rodríguez Faust Riu Pons Joan B Gornals David Nicolás-Pérez Xavier Andújar Murcia Luis Hernández Santos Santolaria Carles Leal Carles Pons Enrique Pérez-Cuadrado-Robles Orlando García-Bosch Michel Papo Berger José Luis Ulla Rocha Cristina Sánchez-Montes Gloria Fernández-Esparrach | 2017 | World Journal of Gastroenterology2017，23，47： | 3 |
| 2 | Parallel ordinary kriging interpolation incorporating automatic variogram fitting显示文摘 | Lluis Pesquer Ana Cort6s Xavier Pons | 2011 | Corn puters Geoseiences2011，37，4： | 1 |
| 3 | A methodological approach of climatological modelling of air temperature and precipitation through GIS techniques 显示文摘 | Miquel Ninyerola Xavier Pons Joan M Roure | 2000 | International Journal of Climatology2000，20，14： | 1 |
| 4 | Increasing biogas production by thermal (70°C) sludge pre-treatment prior to thermophilic anaerobic digestion显示文摘 | Ivet Ferrer Sergio Ponsá Felícitas Vázquez Xavier Font | 2008 | Biochemical Engineering Journal2008，，2： | 1 |
| 5 | A Simple Radiometric Correction Model to Improve Automatic Mapping of Vegetation from Multi-spectral Satellite Data显示文摘 | Xavier Pons Sole-Sugranes | 1994 | Remote Sensing of Environment1994，48，： | 1 |
| 6 | A methodological approach of climatological modelling of air temperature and precipitation through GIS techniques显示文摘 | Miquel N Xavier Pons Joan M Roure | 2000 | Inte rnational Journal of Climatology2000，20，： | 1 |
| 7 | Parallel ordinary kriging interpolation incorporating automatic variogram fitting 显示文摘 | Lluis Pesquer Ana Cortes Xavier Pons | 2011 | Computers and Geosciences2011，37，： | 1 |
| 8 | The efficacy of adjuvant chemotherapy with 5-fluorouracil in colorectal cancer depends on the mismatch repair status显示文摘 | Rodrigo Jover Pedro Zapater Antoni Castells Xavier Llor Montserrat Andreu Joaquín Cubiella Francesc Balaguer Laura Sempere Rosa M. Xicola Luis Bujanda Josep M. Re?é Juan Clofent Xavier Bessa Juan D. Morillas David Nicolás-Pérez Elisenda Pons Artemio Payá | 2008 | European Journal of Cancer2008，，3： | 1 |
| 9 | Developing spatially and thematically detailed backdated maps for land cover studies显示文摘Global or regional land cover change on a decadal time scale can be studied at a high level of detail using the availability of remote sensing data such as that provided by Landsat.However,there are three main technical challenges in this goal.First,the generation of land cover maps without reference data is problematic(backdating).Second,it is important to maintain high accuracies in land cover change map products,requiring a reasonably rich legend within each map.Third,a high level of automation is necessary to aid the management of large volumes of data.This paper describes a robust methodology for processing time series of satellite data over large spatial areas.The methodology includes a retrospective analysis used for the generation of training and test data for historical periods lacking reference information.This methodology was developed in the context of research on global change in the Iberian Peninsula.In this study we selected two scenes covering geographic regions that are representative of the Iberian Peninsula.For each scene,we present the results of two classifications(1985-1989 and 2000-2004 quinquennia),each with a legend of 13 categories.An overall accuracy of over 92%was obtained for all 4 maps. | Juan JoséVidal-Macua Alaitz Zabala Miquel Ninyerola Xavier Pons | 2017 | International Journal of Digital Earth2017，10，2： | 0 |
| 10 | Narrow band imaging and white light endoscopy in the characterization of a polypectomy scar:A single-blind observational study显示文摘AIM To assess the incremental benefit of narrow band imaging(NBI) and white light endoscopy(WLE), randomizing the initial technique for the detection of residual neoplasia at the polypectomy scar after an endoscopic piecemeal mucosal resection(EPMR).METHODS We conducted an observational study in an academic center to assess the incremental benefit of NBI and WLE randomly applied 1:1(NBI-WLE or WLE-NBI) in the follow-up of a post-EPMR scar by the same endoscopist.RESULTS A total of 112 EPMR scars were included. The median baseline polyp size was 20 mm(interquartile range: 14-30). At first review, NBI and WLE showed good sensitivity(85.0% vs 78.9%), specificity(77.1% vs 84.2%) and overall accuracy(80.0% vs 82.5%). NBI after WLE(WLE-NBI group) improved accuracy, but this difference was not statistically significant [area under the curve(AUC): 86.8% vs 81.6%, P = 0.15]. WLE after NBI(NBI-WLE group) did not improve accuracy(AUC: 81.4% vs 81.1%, P = 0.9). Overall, recurrence was found in 39/112(34.8%) lesions.CONCLUSION Although no statistically significant differences were found between the two techniques at the first postEPMR assessment, the use of NBI after WLE may improve residual neoplasia detection. Nevertheless, biopsy is still required in the first scar review. | Fausto Riu Pons Montserrat Andreu Javier Gimeno Beltran Marco Antonioálvarez-Gonzalez Agustín Seoane Urgorri Josep Maria Dedeu Luis Barranco Priego Xavier Bessa | 2018 | World Journal of Gastroenterology2018，24，45： | 0 |
| 11 | Building the World Wide Hypermap(WWH)with a RESTful architecture显示文摘The hypermap concept was introduced in 1992 as a way to hyperlink geospatial features to text,multimedia or other geospatial features.Since then,the concept has been used in several applications,although it has been found to have some limitations.On the other hand,Spatial Data Infrastructures(SDIs)adopt diverse and heterogeneous service oriented architectures(SOAs).They are developed by different standard bodies and are generally disconnected from mass market web solutions.This work expands the hypermap concept to overcome its limitations and harmonise it with geospatial resource oriented architecture(ROA),connecting it to the semantic web and generalising it to the World Wide Hypermap(WWH)as a tool for building a single‘Digital Earth’.Global identifiers,dynamic links,link purposes and resource management capabilities are introduced as a solution that orchestrates data,metadata and data access services in a homogeneous way.This is achieved by providing a set of rules using the current Internet paradigm formalised in the REpresentational State Transfer(REST)architecture and combining it with existing Open Geospatial Consortium(OGC)and International Organization for Standardization(ISO)standards.A reference implementation is also presented and the strategies needed to implement the WWH,which mainly consist in a set of additions to current Geographic Information System(GIS)products and a RESTful server that mediates between the Internet and the local GIS applications. | Joan Maso Xavier Pons Alaitz Zabala | 2014 | International Journal of Digital Earth2014，7，3： | 0 |
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