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排序方式: 共有939条查询结果,搜索用时 31 毫秒
31.
Simona Attardo Viveksandeep Thoguluva Chandrasekar Marco Spadaccini Roberta Maselli Harsh K Patel Madhav Desai Antonio Capogreco Matteo Badalamenti Piera Alessia Galtieri Gaia Pellegatta Alessandro Fugazza Silvia Carrara rea Anderloni Pietro Occhipinti Cesare Hassan Prateek Sharma Alessandro Repici 《World journal of gastroenterology : WJG》2020,26(37):5606-5616
Several studies have shown a significant adenoma miss rate up to 35% during screening colonoscopy, especially in patients with diminutive adenomas. The use of artificial intelligence(AI) in colonoscopy has been gaining popularity by helping endoscopists in polyp detection, with the aim to increase their adenoma detection rate(ADR) and polyp detection rate(PDR) in order to reduce the incidence of interval cancers. The efficacy of deep convolutional neural network(DCNN)-based AI system for polyp detection has been trained and tested in ex vivo settings such as colonoscopy still images or videos. Recent trials have evaluated the real-time efficacy of DCNN-based systems showing promising results in term of improved ADR and PDR. In this review we reported data from the preliminary ex vivo experiences and summarized the results of the initial randomized controlled trials. 相似文献
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G Sardella G Biondi-Zoccai F Fedele 《Archives of internal medicine》2012,172(13):1044; author reply 1044-1044; author reply 1045
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José G. Dórea Rejane C. Marques Luciana Abreu 《Journal of toxicology and environmental health. Part A》2014,77(1-3):1-13
Neurological outcomes (Gesell development schedules [GDS]), age of walking, and age of talking were studied in 299 toddlers (12 to 24 mo) in relation to environmental (fish consumption and tin mining) exposure. Exposure to fish methylmercury (MeHg) consumption and iatrogenic ethylmercury (EtHg) in Thimerosal-containing vaccines (TCV) was quantified in toddlers from two rural villages (n?=?91, Itapuã; n?=?218, Bom Futuro) respectively populated by fishers and cassiterite miners. Median total hair Hg (HHg) concentrations of infants from Itapuã (3.5 μg/g) were significantly higher than those of infants from Bom Futuro (2.2 μg/g). Median EtHg exposure from TCV was also significantly higher in toddlers from Itapuã (137.5 μg) than in those from Bom Futuro (112.5 μg). There were no significant differences between groups for any of the Gesell schedules; however, there were proportionally more compromised toddlers (GDS < 70) in Itapuã than Bom Futuro. Median age of talking was not statistically different but median age of walking was significantly higher in Bom Futuro. In toddlers from both villages, of fishers and miners, HHg concentrations were significantly correlated with family fish consumption. A logistic regression model was applied to all infants after classification into two groups: above or below the median Gesell schedules. Overall, there was no distinctive pattern of neurodevelopment associated with either HHg or EtHg exposure; however, nutritional status was significantly associated with GDS. In conclusion, milestone achievement was delayed in toddlers from tin-ore mining communities. Despite significantly higher exposure to both forms of organic Hg (MeHg from maternal fish consumption, and EtHg from TCV) in toddlers from the fishing village, significant differences were seen only among the proportions of most severely affected toddlers (GDS < 70). 相似文献
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Francesco Giannini MD Matteo Pagnesi MD Gianluca Campo MD PhD Michael Donahue MD Luca A. Ferri MD Carlo Briguori MD PhD Giulio G. Stefanini MD PhD Raffaele Scardala MD Gennaro Sardella MD Salvatore De Rosa MD PhD Filippo Figini MD Alberto Monello MD Luigi E. Pastormerlo MD Luca Testa MD PhD Annamaria Nicolino MD Alfonso Ielasi MD Alessandro Durante MD Angelo Leone MD Giorgios Tzanis MD Antonio Mangieri MD Giovanni Ciccarelli MD Martina Briani MD Bernhard Reimers MD Andrea Ceccacci MD Ciro Indolfi MD Imad Sheiban MD Cataldo Palmieri MD Francesco Bedogni MD Maurizio Tespili MD Azeem Latib MD Francesco Gallo Antonio Colombo MD 《Catheterization and cardiovascular interventions》2021,97(3):411-420
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Impact of donor-specific antibodies on long-term graft survival with pediatric liver transplantation
Felicitas Leonie Schotters Jan Beime rea Briem-Richter Thomas Binder Uta Herden Enke Freya Grabhorn 《World journal of hepatology》2021,13(6):673-685
BACKGROUNDIn a previous paper, we reported a high prevalence of donor-specific antibody (DSA) in pediatric patients with chronic rejection and expressed the need for confirmation of these findings in a larger cohort.AIMTo clarify the importance of DSAs on long-term graft survival in a larger cohort of pediatric patients.METHODSWe performed a retrospective analysis of 123 pediatric liver transplantation (LT) recipients who participated in yearly follow-ups including Luminex testing for DSA at our center. The cohort was split into two groups according to the DSA status (DSA-positive n = 54, DSA-negative n = 69). Groups were compared with regard to liver function, biopsy findings, graft survival, need for re-LT and immunosuppressive medication.RESULTSDSA-positive pediatric patients showed a higher prevalence of chronic rejection (P = 0.01), fibrosis (P < 0.001) and re-transplantation (P = 0.018) than DSA-negative patients. Class II DSAs particularly influenced graft survival. Alleles DQ2, DQ7, DQ8 and DQ9 might serve as indicators for the risk of chronic rejection and/or allograft fibrosis. Mean fluorescence intensity levels and DSA number did not impact graft survival. Previous episodes of chronic rejection might lead to DSA development.CONCLUSIONDSA prevalence significantly affected long-term liver allograft performance and liver allograft survival in our cohort of pediatric LT. Screening for class II DSAs in combination with assessment of protocol liver biopsies for chronic antibody-mediated rejection improved early identification of patients at risk of graft loss. 相似文献
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Marco Gatti Tommaso D’Angelo Giuseppe Muscogiuri Serena Dell aversana Alessandro Andreis rea Carisio Fatemeh Darvizeh Davide Tore Gianluca Pontone Riccardo Faletti 《World journal of cardiology》2021,13(11):628-649
Cardiac masses diagnosis and treatment are a true challenge, although they are infrequently encountered in clinical practice. They encompass a broad set of lesions that include neoplastic (primary and secondary), non-neoplastic masses and pseudomasses. The clinical presentation of cardiac tumors is highly variable and depends on several factors such as size, location, relation with other structures and mobility. The presumptive diagnosis is made based on a pre liminary non-invasive diagnostic work-up due to technical difficulties and risks associated with biopsy, which is still the diagnostic gold standard. The findings should always be interpreted in the clinical context to avoid misdiagnosis, particularly in specific conditions (e.g., infective endocarditis or thrombi). The modern multi-modality imaging techniques has a key role not only for the initial assessment and differential diagnosis but also for management and surveillance of the cardiac masses. Cardiovascular magnetic resonance (CMR) allows an optimal non-invasive localization of the lesion, providing multiplanar information on its relation to surrounding structures. Moreover, with the additional feature of tissue characterization, CMR can be highly effective to distinguish pseudomasses from masses, as well as benign from malignant lesions, with further differential diagnosis of the latter. Although histopathological assessment is important to make a definitive diagnosis, CMR plays a key role in the diagnosis of suspected cardiac masses with a great impact on patient management. This literature review aims to provide a comprehensive overview of cardiac masses, from clinical and imaging protocol to pathological findings. 相似文献
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A Randazzo F Sardella R Martinotti G Daffara M Parziale G Cremonesi 《American heart journal》1983,105(5):756-762
We have explored the systolic time intervals of 52 patients with angina pectoris at the time of their hospitalization in our wards. Our results are in close agreement with published data, essentially indicating prolongation of the preejection time and shortening of the ejection time. These alterations of systolic times can be interpreted pathophysiologically as as expressing reduced myocardial contractility. The long PEP-short LVET polygraph picture, occurring in the course of chronic ischemic heart disease, reveals the deficit of myocardial contractility at a stage of the disease at which clinical evidence of left ventricular failure is usually not yet detectable. 相似文献