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223篇 您的检索式:作者名="Bert R"
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1Near-infrared fluorescence imaging of a solitary fibrous tumor of the pancreas using methylene blue显示文摘A 67-year-old female presented with unexplained abdominal pain. A contrast-enhanced computed tomography scan of the abdomen incidentally revealed a mass in the uncinate process of the pancreas. This mass was resected and based on histopathological findings, diagnosed as a solitary fibrous tumor (SFT) of the pancreas. A SFT is an extremely rare benign mesenchymal tumor that in 65% of cases affects the visceral pleura but can also affect extra-pleural sites. The intraoperative demarcation of pancreatic tumors, such as SFTs, can bechallenging. In this report, the first clear intraoperative identification of a SFT of the pancreas in a human was shown using near-infrared fluorescence and methylene blue.Joost R van der Vorst Alexander L Vahrmeijer Merlijn Hutteman Tjalling Bosse Vincent THBM Smit Cornelis JH van de Velde John V Frangioni Bert A Bonsing 2012World Journal of Gastrointestinal Surgery2012,4,7:7
2Diagnosis of focal liver lesions with deep learning-based multichannel analysis of hepatocyte-specific contrast-enhanced magnetic resonance imaging显示文摘BACKGROUND The nature of input data is an essential factor when training neural networks.Research concerning magnetic resonance imaging(MRI)-based diagnosis of liver tumors using deep learning has been rapidly advancing.Still,evidence to support the utilization of multi-dimensional and multi-parametric image data is lacking.Due to higher information content,three-dimensional input should presumably result in higher classification precision.Also,the differentiation between focal liver lesions(FLLs)can only be plausible with simultaneous analysis of multisequence MRI images.AIM To compare diagnostic efficiency of two-dimensional(2D)and three-dimensional(3D)-densely connected convolutional neural networks(DenseNet)for FLLs on multi-sequence MRI.METHODS We retrospectively collected T2-weighted,gadoxetate disodium-enhanced arterial phase,portal venous phase,and hepatobiliary phase MRI scans from patients with focal nodular hyperplasia(FNH),hepatocellular carcinomas(HCC)or liver metastases(MET).Our search identified 71 FNH,69 HCC and 76 MET.After volume registration,the same three most representative axial slices from all sequences were combined into four-channel images to train the 2D-DenseNet264 network.Identical bounding boxes were selected on all scans and stacked into 4D volumes to train the 3D-DenseNet264 model.The test set consisted of 10-10-10 tumors.The performance of the models was compared using area under the receiver operating characteristic curve(AUROC),specificity,sensitivity,positive predictive values(PPV),negative predictive values(NPV),and f1 scores.RESULTS The average AUC value of the 2D model(0.98)was slightly higher than that of the 3D model(0.94).Mean PPV,sensitivity,NPV,specificity and f1 scores(0.94,0.93,0.97,0.97,and 0.93)of the 2D model were also superior to metrics of the 3D model(0.84,0.83,0.92,0.92,and 0.83).The classification metrics of FNH were 0.91,1.00,1.00,0.95,and 0.95 using the 2D and 0.90,0.90,0.95,0.95,and 0.90 using the 3D models.The 2D and 3D networks'performance in the diagnosis of HCC were 1.00,0.80,0.91,1.00,and 0.89 and 0.88,0.70,0.86,0.95,and 0.78,respectively;while the evaluation of MET lesions resulted in 0.91,1.00,1.00,0.95,and 0.95 and 0.75,0.90,0.94,0.85,and 0.82 using the 2D and 3D networks,respectively.CONCLUSION Both 2D and 3D-DenseNets can differentiate FNH,HCC and MET with good accuracy when trained on hepatocyte-specific contrast-enhanced multi-sequence MRI volumes.Róbert Stollmayer Bettina K Budai Ambrus Tóth IldikóKalina Erika Hartmann Péter Szoldán Viktor Bérczi Pál Maurovich-Horvat Pál N Kaposi 2021World Journal of Gastroenterology2021,27,35:6
3Surgical stress and cytoskeletal changes in lens epithelial cells following manual and femtosecond laser-assisted capsulotomy显示文摘AIM:To study the effect of mechanical stress on the cytoskeleton in lens epithelial cells following conventional phacoemulsification surgery(CPS)and femtosecond laserassisted cataract surgery(FLACS).METHODS:The cytoskeleton of the epithelial cells of the anterior lens capsules(ALC)removed by CPS and FLACS was examined by immunohistochemistry.Expression of the intermediate filament,glial fibrillary acidic protein(GFAP),and glutamine synthetase(GS)immunoreactivity were detected.In order to map the actin network of cells,fluorescently labeled phalloidin was used.The samples were examined using confocal laser scanning microscopy.RESULTS:GFAP expression was visible in a larger number of the epithelial cells after CPS compared to FLACS.In CPS sample’s epithelial cells,GFAP immunoreactivity indicated robust morphological change.Regarding the actin filaments,the presence of tubular elements connecting epithelial cells,regular actin pattern and marked cortical network after CPS were found.Following FLACS,the actin cytoskeleton of the epithelial cells remained densely structured,and the tubular elements were undetectable,however,the above-mentioned regular actin pattern and the marked cortical network were visible.CONCLUSION:The conventional removal of the ALC induces more robust changes of the cytoskeleton of the lens epithelial cells.ANDrea Krisztina Sükosd Krisztina Szabadfi Edina Szabó-Meleg Beáta Gáspár Pavel Stodulka Gyorgy SétálóJr Róbert Gábriel Miklós Nyitrai Zsolt Biró Hajnalka Abrahám 2020International Journal of Ophthalmology(English edition)2020,13,6:2
4Decomposition of some polynitro arenes initiated by heat and shock显示文摘Róbert Varga Svatopluk Zeman Martin Kouba 2006Journal of Hazardous Materials2006,,3:2
5Zinc Tolerance and Accumulation in Metallicolous and Nonmetallicolous Populations of Arabidopsis Halleri (Brassicaceae) 显示文摘 MACNAIR M R DELAGUERIE P 2000New Phytologist2000,146,:1
6Ultrasound biomicroscopy in chronic ocular hypotony:its impact on diagnosis and management显示文摘Sigrid R Peter S Bert E Karl BS Gunter K 2002Retina2002,22,5:1
7Zinc tolerance and accumulation in metallicolous populations of Arabi dopsis halleri (Brassicaceae)显示文摘Bert V Macnair M R Lagurie P D E 2000New Phytologist2000,,146:1
8Application ofseismic attributes at the 3D seismic interpretation显示文摘Bibiana Kytková Patrik Hutman Róbert Prochác 2009Acta Geo-logica Slovaca2009,1,2:1
9Physical and bioticdrivers of plant distribution across estuarine salinity gradients显示文摘Crain C M Silliman B R Bertness S L 2004Ecology2004,85,:1
10Role of life style and aging on the longitudinal change in cardiorespiratory fitness显示文摘ACLS ANDREW S JACKSON XUEMEI SUI JAMES R HE BERT 2009Arch Int Ern Med2009,169,19:1
11Optimization of biolistic transformation of embryogenic grape cell suspensions显示文摘H(e)bert D Kikkert J R Smith F D Reisch B I 0,,:1
12Oxalipatin,in combination with 5-fluorouracil(5-Fu)and lencovorin(LV)in patients with advanceA or metastatic gastric cancer(A/MOC)显示文摘Cavanna L Berte R Bernuzzi P 2003Proc Am Soc Clin Oncol2003,22,:1
13Music improves sleep quality in students显示文摘László Harmat Johanna Takács Róbert Bódizs 0,,03:1
14The miR - 15/107 group of microRNA genes: evolutionary biology, cellular functions, and roles in human diseases显示文摘FINNERTY J R WANG W X HI'BERT S S 2010J Mol Biol2010,402,3:1
15显示文摘Miclau M He' bert S Retoux R 2005J Solid State Chem2005,178,:1
16Pressure-volume relationship for rat dermis: Compression studies显示文摘Bert J L Reed R K 1997Acta physiologica Scan- dinavica1997,160,1:1
17Cognitive-impairment-free life expectancy for Canadian seniors 显示文摘DUBOIS MF HI'BERT R 2006Dement Geriatr Cogn Disord2006,22,4:1
18Carbon and nutriem losses during manure storage under traditional and improved prac- tices in smallholder crop - livestock systems-evidence from Kenya 显示文摘Pablo T Mariana C R Bert H J 2011Plant and Soil2011,328,:1
19Stable isotopic evidence for climate and basin evolu- tion of the Late Cretaceous Songliao basin, China 显示文摘Chamberlain C P Wan X Q Graham S A Carroll A R Doeb- bert A C Sageman B B Blisniuk P Kent-Corson M L Wang Z Wang C S 2013Palaeo- geogr Palaeoclimatol Palaeoecol2013,385,:1
20Phosphorus runoff from agricultural land and direct fertilizer effects :A review显示文摘MURRAY R H BERT F Q NGUYEN M L 2004Journal of Environment Quality2004,33,:1
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