检索结果-南通市图书馆

Current role and future perspectives of artificial intelligence in echocardiography

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Cardiology 2023年第6期15卷 284-292页

作者： Rafael Vidal-Perez Julia Grapsa Alberto Bouzas-Mosquera Ricardo Fontes-Carvalho Jose manuel vazquez-Rodriguez Servicio de Cardiología Unidad de Imagen y Función CardíacaComplexo Hospitalario Universitario A Coruña Centro de Investigación Biomédica en Red-Instituto de Salud Carlos ⅢA Coruña 15006Spain Department of Cardiology Guys and St Thomas NHS TrustLondon SE17EHUnited Kingdom Cardiology Department Centro Hospitalar de Vila Nova de Gaia/EspinhoVilanova de Gaia 4434-502Portugal Cardiovascular R&D Centre-UnIC@RISE Department of Surgery and PhysiologyFaculty of Medicine of the University of PortoPorto 4200-319Portugal Servicio de Cardiología Complexo Hospitalario Universitario A CoruñaA Coruña 15006Spain

Echocardiography is an essential tool in diagnostic cardiology and is fundamental to clinical *** intelligence(AI)can help health care providers serving as a valuable diagnostic tool for physicians in the field of echocardiography specially on the automation of measurements and interpretation of *** addition,it can help expand the capabilities of research and discover alternative pathways in medical management specially on *** this review article,we describe the current role and future perspectives of AI in echocardiography.

关键词： Echocardiography Artificial intelligence Machine learning Deep learning Prognosis

Value of cardiac magnetic resonance on the risk stratification of cardiomyopathies

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Cardiology 2023年第10期15卷 487-499页

作者： Rafael Vidal-Perez Mariana Brandao Wael Zaher Ruben Casado-Arroyo Alberto Bouzas-Mosquera Ricardo Fontes-Carvalho Jose manuel vazquez-Rodriguez Servicio de Cardiologia Unidad de Imagen y Funcion CardiacaComplexo Hospitalario Universitario A Coruña Centro de Investigacion Biomedica en Red de Enfermedades Cardiovasculares(CIBERCV)A Coruna 15006GaliciaSpain Department of Cardiology Centro Hospitalar de Vila Nova de Gaia/EspinhoVila Nova de Gaia 4434-502Portugal Department of Cardiology Hôpital ErasmeUniversite Libre de BruxellesBrussels 1070BrusselsBelgium Cardiovascular R&D Centre-UnIC@RISE Department of Surgery and PhysiologyFaculty of Medicine of the University of PortoPorto 4200-319Portugal Servicio de Cardiología Complexo Hospitalario Universitario A CoruñaA Coruña 15006A CoruñaSpain

Cardiomyopathies represent a diverse group of heart muscle diseases with varying etiologies,presenting a diagnostic challenge due to their heterogeneous *** evaluation using cardiac imaging techniques is impera-tive as symptoms can evolve over *** imaging approaches are pivotal for accurate diagnosis,treatment planning,and optimizing prognostic *** these,cardiovascular magnetic resonance(CMR)stands out for its ability to provide precise anatomical and functional *** manuscript ex-plores the significant contributions of CMR in the diagnosis and management of patients with cardiomyopathies,with special attention to risk ***’s high spatial resolution and tissue characterization capabilities enable early detec-tion and differentiation of various cardiomyopathy ***,it offers valuable insights into myocardial fibrosis,tissue viability,and left ven-tricular function,crucial parameters for risk stratification and predicting adverse cardiac *** integrating CMR into clinical practice,clinicians can tailor patient-specific treatment plans,implement timely interventions,and optimize long-term *** non-invasive nature of CMR reduces the need for invasive procedures,minimizing patient *** review highlights the vital role of CMR in monitoring disease progression,guiding treatment decisions,and identifying potential complications in patients with *** utilization of CMR has significantly advanced our understanding and management of these complex cardiac conditions,leading to improved patient outcomes and a more personalized approach to care.

关键词： Cardiac magnetic resonance Cardiomyopathies Prognosis Dilated cardiomyopathy Hypertrophic cardiomyopathy Restrictive cardiomyopathy

Cardiovascular disease and COVID-19,a deadly combination:A review about direct and indirect impact of a pandemic

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2022年第27期10卷 9556-9572页

作者： Rafael Vidal-Perez Mariana Brandão Michal Pazdernik Karl-Patrik Kresoja Myriam Carpenito Shingo Maeda Rubén Casado-Arroyo Saverio Muscoli Janine Poss Ricardo Fontes-Carvalho Jose manuel vazquez-Rodriguez Servicio de Cardiología Unidad de Imagen y Función CardíacaComplexo Hospitalario Universitario A Coruña Centro de Investigación Biomédica en Red-Instituto de Salud Carlos ⅢA Coruña 15006Spain Department of Cardiology Centro Hospitalar de GaiaGaia 4400-020Portugal Intensive Care Unit Department of CardiologyInstitute for Clinical and Experimental Medicine PraguePrague 14021Czech Republic Heart Center Leipzig University of LeipzigLeipzig 04289Germany Unit of Cardiac Sciences Department of MedicineCampus Bio-Medico University of RomeRome 00128Italy Arrhythmia Advanced Therapy Center AOI Universal HospitalKawasaki 210-0822Japan Department of Cardiology Hôpital ErasmeUniversitéLibre de BruxellesBrussels 1070Belgium Unit of Cardiology Policlinico Tor VergataRome 00133Italy Department of Surgery and Physiology Faculty of Medicine of the University of PortoPorto 4200-319Portugal

Coronavirus disease 2019(COVID-19) is known to present with respiratory symptoms,which can lead to severe pneumonia and respiratory ***,it can have multisystem complications such as cardiovascular *** cardiovascular manifestations reported comprise myocarditis,cardiogenic shock,arrhythmias,pulmonary embolism,deep vein embolism,acute heart failure,and myocardial *** is also an indirect impact of the pandemic on the management of cardiovascular care that has been shown clearly in multiple *** this review,we summarize the deadly relation of COVID-19 with cardiovascular events and the wider impact on several cardiovascular care areas by the pandemic situation。

关键词： COVID-19 Cardiovascular diseases Pandemic Heart failure Telemedicine Prognosis

Stepwise magnetization reversal of geometrically tuned in diameter Ni and FeCo bi-segmented nanowire arrays

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2019年第7期12卷 1547-1553页

作者： Ester M. Palmero Miguel Mendez Silvia Gonzalez Cristina Bran Victor Vega manuel vazquez Victor M. Prida Institute of Materials Science of Madrid (ICMM-CSIC) Madrid 28049Spain Department of Physics University of OviedoFederico Garda Lorca 18Oviedo 33007Spain Division of Permanent Magnets and Applications IMDEA NanoscienceMadrid 28049Spain

Magnetization reversal processes of hexagonal dense arrays of bi-segmented Ni and Fe50Co50 nanowires consisting of two well defined diameters (45 and 80 nm) have been *** nanowires were grown inside of tailored pores of anodic alumina templates by combined anodization,atomic layer deposition (ALD) and electrodeposition *** experiments have allowed to identify their two-step magnetization reversal process ascribed to the respective segments of different *** is concluded from the differential susceptibility observed in the hysteresis loops,contrary to those for nanowires with homogeneous *** results are also confirmed by the first-order reversal curve (FORC) distribution diagrams,where an elongation parallel to the interaction axis around two coercive field values is obtained,which is correlated to the difference in diameter of the two *** well-defined two-step magnetization reversal process through the nanowire diameter design is thought to be very useful for the advanced control of the remagnetization in arrays of magnetic multidomain systems.

关键词： Bi-segmented nanowires nickel iron cobalt alloy stepwise magnetization reversal first-order reversal curve (FORC)

ISCHEMIA trial:How to apply the results to clinical practice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Cardiology 2021年第8期13卷 237-242页

作者： Rafael Vidal-Perez Alberto Bouzas-Mosquera Jesus Peteiro Jose manuel vazquez-Rodriguez Servicio de Cardiologia Unidad de Imagen y Funcion CardiacaComplexo Hospitalario Universitario A Coruna(CHUAC)Centro de Investigacion Biomedica en Red(CIBERCV)-Instituto de Salud Carlos IIIA Coruna 15006Spain Servicio de Cardiología Complexo Hospitalario Universitario A CoruñaA Coruña 15006Spain

During the last years two questions have been continuously asked in chronic coronary syndromes:(1)Do revascularization procedures(coronary artery bypass grafting or percutaneous coronary intervention)really improve symptoms of angina?and(2)Do these techniques improve outcomes,*** they prevent new myocardial infarction events and cardiovascular death?Therefore,there was a need for a large definitive *** study was the ISCHEMIA trial,a large,multicentric trial sponsored by the National Heart,Lung,and Blood *** main trial compared coronary revascularization and optimal medical treatment(OMT)vs OMT alone in 5179 patients enrolled after a stress *** a median 3.2-year follow-up,318 primary outcome events occurred;the adjusted hazard ratio for the invasive strategy as compared with the conservative strategy was 0.93(95%confidence interval 0.80-1.08,P=0.34).The ISCHEMIA trial deeply disrupted many of our prior attitudes regarding management strategies for patients with stable coronary artery *** findings underscore the benefits of disease-modifying OMT for stable coronary artery disease *** main purposes of ischemia assessment before this trial were:Diagnostic purposes,assessment of outcome,and adding to decision-making ***,this changed after the trial *** results of ISCHEMIA might challenge the current diagnostic approach for stable angina patients recommended in the last European Society of Cardiology guidelines on chronic coronary disease that were based on studies published before the ISCHEMIA *** this editorial we propose our approach based on the ISCHEMIA study and the pretest probability for a positive test in patients with chronic coronary syndromes.

关键词： Stable angina Chronic coronary syndrome ISCHEMIA Stress testing Therapy Diagnosis

Optimal Positioning Strategy for Multi-Camera Zooming Drones

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2024年第8期11卷 1802-1818页

作者： manuel Vargas Carlos Vivas Teodoro Alamo Department of System Engineering and Automation University of SevilleSeville 41092Spain

In the context of multiple-target tracking and surveillance applications,this paper investigates the challenge of determining the optimal positioning of a single autonomous aerial vehicle or agent equipped with multiple independently-steerable zooming cameras to effectively monitor a set of targets of *** camera is dedicated to tracking a specific target or cluster of *** key innovation of this study,in comparison to existing approaches,lies in incorporating the zooming factor for the onboard cameras into the optimization *** enhancement offers greater flexibility during mission execution by allowing the autonomous agent to adjust the focal lengths of the onboard cameras,in exchange for varying real-world distances to the corresponding targets,thereby providing additional degrees of freedom to the optimization *** proposed optimization framework aims to strike a balance among various factors,including distance to the targets,verticality of viewpoints,and the required focal length for each *** primary focus of this paper is to establish the theoretical groundwork for addressing the non-convex nature of the optimization problem arising from these *** this end,we develop an original convex approximation *** paper also includes simulations of diverse scenarios,featuring varying numbers of onboard tracking cameras and target motion profiles,to validate the effectiveness of the proposed approach.

关键词： Convex optimization projective transformation unmanned aerial vehicle visual object tracking visual surveillance.

Why is early detection of colon cancer still not possible in 2023?

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第3期30卷 211-224页

作者： Valeria Tonini manuel Zanni Department of Medical and Surgical Sciences University of BolognaBologna 40138Italy

Colorectal cancer(CRC)screening is a fundamental tool in the prevention and early detection of one of the most prevalent and lethal *** the years,screening,particularly in those settings where it is well organized,has succeeded in reducing the incidence of colon and rectal cancer and improving the prognosis related to *** considerable advancements in screening technologies and strategies,the effectiveness of CRC screening programs remains less than *** paper examined the multifaceted reasons behind the persistent lack of effect-iveness in CRC screening *** a critical analysis of current methodologies,technological limitations,patient-related factors,and systemic challenges,we elucidated the complex interplay that hampers the successful reduction of CRC morbidity and mortality *** acknowledging the ad-vancements that have improved aspects of screening,we emphasized the necessity of addressing the identified barriers *** study aimed to raise awareness of how important CRC screening is in reducing costs for this *** and early diagnosis are not only important in improving the prognosis of patients with CRC but can lead to an important reduction in the cost of treating a disease that is often diagnosed at an advanced *** more sooner can mean saving money later.

关键词： Colorectal cancer Colorectal cancer screening Colorectal screening test Colon and rectal cancer

Tracking the change in Spanish greenhouse gas emissions through an LMDI decomposition model:A global and sectoral approach

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第5期139卷 114-122页

作者： Paula Fernández González María José Presno manuel Landajo Department of Applied Economics University of OviedoAuda del Cristos/n 33011 OviedoSpain

The reduction of GHG emissions to reverse the greenhouse effect is one of the main challenges in this *** this paper we pursue two ***,we analyze the evolution of GHG emissions in Spain in 2008–2018,at both the global and sectoral levels,with the variation in emissions decomposed into a set of determining ***,we propose several actions specifically oriented to more tightly controlling the level of *** results showed a remarkable reduction(18.44%)in GHG emissions,mainly due to the intensity effect,but also to the production-per-capita *** detected somewhat different patterns among the various sectors *** the intensity effect was the most influential one in the agricultural,transport,and others sectors,the production-per-capita effect was predominant in the case of *** carbonization effect was revealed as crucial in the commerce *** above findings highlight the importance of the energy efficiency measures taken in recent years in the Spanish economy,also pointing to the need to deepen those strategies and to propose new measures that entail greater efficiency in *** efforts in areas like innovation,R&D,diffusion of more eco-friendly technologies,and a greater use of greener energies all prove to be essential reduction actions to fight the greenhouse effect.

关键词： LMDI Decomposition Spain GHG emissions

Improved organs at risk segmentation based on modified U‐Net with self‐attention and consistency regularisation

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

CAAI Transactions on Intelligence Technology 2024年第4期9卷 850-865页

作者： Maksym Manko Anton Popov Juan manuel Gorriz Javier Ramirez Electronic Engineering Department Igor Sikorsky Kyiv Polytechnic InstituteKyivUkraine Department of Signal Theory Telematics and CommunicationsUniversity of GranadaGranadaSpain

Cancer is one of the leading causes of death in the world,with radiotherapy as one of the treatment *** planning starts with delineating the affected area from healthy organs,called organs at risk(OAR).A new approach to automatic OAR seg-mentation in the chest cavity in Computed Tomography(CT)images is *** proposed approach is based on the modified U‐Net architecture with the ResNet‐34 encoder,which is the baseline adopted in this *** new two‐branch CS‐SA U‐Net architecture is proposed,which consists of two parallel U‐Net models in which self‐attention blocks with cosine similarity as query‐key similarity function(CS‐SA)blocks are inserted between the encoder and decoder,which enabled the use of con-sistency *** proposed solution demonstrates state‐of‐the‐art performance for the problem of OAR segmentation in CT images on the publicly available SegTHOR benchmark dataset in terms of a Dice coefficient(oesophagus-0.8714,heart-0.9516,trachea-0.9286,aorta-0.9510)and Hausdorff distance(oesophagus-0.2541,heart-0.1514,trachea-0.1722,aorta-0.1114)and significantly outperforms the *** current approach is demonstrated to be viable for improving the quality of OAR segmentation for radiotherapy planning.

关键词： 3‐D computer vision deep learning deep neural networks image segmentation medical image processing object segmentation