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Ara es mostren els items 1-20 de 31

    • Assessing pulmonary function parameters non-invasively by electrical bioimpedance tomography 

      Vargas Luna, Miguel; Delgadillo Cano, Maria Isabel; Riu Costa, Pere Joan; Kashina, Svetlana; Balleza Ordaz, José Marco (Springer Nature, 2023-12-28)
      Article
      Accés restringit per política de l'editorial

    • Book review of “Biomagnetics: Principles and Applications of Biomagnetic Stimulation and Imaging” edited by Shoogo Ueno and Masaki Sekino 

      Riu Costa, Pere Joan (2016-05-12)
      Article
      Accés obert
      This article is a review of the book “Biomagnetics: Principles and Applications of Biomagnetic Stimulation and Imaging” (ISBN 978-1-4822-3920-1, 343 pages) edited by Shoogo Ueno and Masaki Sekino published by CRC Press, ...

    • Car windshield behavior transient analysis by FDTD 

      Jauregui Tellería, Ricardo; Pous Solà, Marc; Vives, Yolanda; Fernández Chimeno, Mireya; Riu Costa, Pere Joan; Silva Martínez, Fernando (2009-06)
      Text en actes de congrés
      Accés obert
      The present article studies the influence of a car heatable windshield by means of an equivalent material that allows an appropriate meshing of the vehicle. This study has been performed analyzing the propagation of an ...

    • Common mode feedback analysis for EIT systems with distributed current sources 

      Antón Cardona, Daniel; Riu Costa, Pere Joan (2010)
      Text en actes de congrés
      Accés obert
      The use of differential voltage measurements is widely used in EIT instruments. Instrumentation amplifiers are always affected by common mode voltages at their input. These voltages may have different origins, being the ...

    • Detecció d'estructures estàtiques en el cos humà usant mètodes multifreqüència en Tomografia de impedància elèctrica 

      Riu Costa, Pere Joan (Universitat Politècnica de Catalunya, 1991-11-29)
      Tesi
      Accés obert
      Se analiza la obtención de imágenes que representan la estructura de secciones del cuerpo humano por medio de la medida de impedancia eléctrica. El método propuesto se basa en el comportamiento frecuencial de la conductividad ...

    • Differentiation using minimally-invasive bioimpedance measurements of healthy and pathological lung tissue through bronchoscopy 

      Company Se, Georgina; Nescolarde Selva, Lexa Digna; Pajares Ruiz, Virginia; Torrego Fernández, Alfons; Riu Costa, Pere Joan; Rosell Ferrer, Francisco Javier; Bragós Bardia, Ramon (Frontiers Media SA, 2023-04-11)
      Article
      Accés obert
      Purpose: To use minimally-invasive transcatheter electrical impedance spectroscopy measurements for tissue differentiation among healthy lung tissue and pathologic lung tissue from patients with different respiratory ...

    • Effect of calibration for tissue differentiation between healthy and neoplasm lung using minimally invasive electrical impedance spectroscopy 

      Company Se, Georgina; Nescolarde Selva, Lexa Digna; Pajares Ruiz, Virginia; Torrego Fernández, Alfons; Riu Costa, Pere Joan; Rosell Ferrer, Francisco Javier; Bragós Bardia, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Article
      Accés obert
      his study proposes a calibration method and analyses the effect of this calibration in lung measures, using minimally invasive electrical impedance spectroscopy with the 3-electrode method, for tissue differentiation between ...

    • Electrical impedance signal analysis for medical diagnosis 

      Vargas Luna, José Miguel; Balleza Ordaz, José Marco; Huerta Franco, María-Raquel; Riu Costa, Pere Joan (Springer, 2018-05-16)
      Capítol de llibre
      Accés restringit per política de l'editorial
      This book is based on the best contributions to the advancement of bioimpedance knowledge and use from the Latin American Congress series, CLABIO. Basic bioimpedance facts as well as promising and original contributions ...

    • Electrical impedance tomography to measure spirometry parameters in chronic obstructive pulmonary disease patients 

      Vargas Luna, José Miguel; Kashina, Svetlana; Riu Costa, Pere Joan; Casan Clará, Pere; Balleza Ordaz, José Marco (Sociedad Mexicana de Ingeniería Biomedíca, 2022-12-01)
      Article
      Accés obert
      Spirometry is a test for the diagnosis of chronic obstructive pulmonary disease. It is a technique that can be intolerant due to the essential use of a mouthpiece and a clamp. This study proposes the use of electrical ...

    • Espectrometría de impedancia eléctrica en tejido pulmonar 

      Coll Guich, Núria; Bragós Bardia, Ramon; Muñoz Fernández, Ana María; Pajares, Virginia; Torrego Fernández, Alfons; Riu Costa, Pere Joan (Universitat Politècnica de València, 2016)
      Comunicació de congrés
      Accés obert
      Las biopsias de pulmón son necesarias para el estudio de diversas enfermedades pulmonares. Este es un procedimiento agresivo y tiene la dificultad añadida de conocer la ubicación exacta de la toma de muestras. El método ...

    • Heating of a tissue by near nield exposure to a dipole: a model analysis 

      Riu Costa, Pere Joan; Foster, Kenneth R. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1999-08-31)
      Article
      Accés obert
      We report a numerical study of the induced electric fields and specific absorption rate (SAR) produced by microwave radiation from a half-wavelength dipole near tissue models, and the resulting transient and steady-state ...

    • In vivo electrical bioimpedance characterization of human lung tissue during the bronchoscopy procedure. A feasibility study 

      Sánchez Terrones, Benjamín; Vandersteen, Gerd; Martín Robles, Irene; Castillo Villegas, Diego; Torrego Fernández, Alfons; Riu Costa, Pere Joan; Schoukens, Johan; Bragós Bardia, Ramon (2013-07)
      Article
      Accés restringit per política de l'editorial
      Lung biopsies form the basis for the diagnosis of lung cancer. However, in a significant number of cases bronchoscopic lung biopsies fail to provide useful information, especially in diffuse lung disease, so more aggressive ...

    • Initial analysis of SAR from a cell phone inside a vehicle by numerical computation. 

      Anzaldi, Gabriel; Silva Martínez, Fernando; Fernández Chimeno, Mireya; Quílez Figuerola, Marcos; Riu Costa, Pere Joan (Institution of Electrical and Electronics Engineers, 2007-05-31)
      Article
      Accés obert
      The purpose of this paper is to analyze the influence of the metallic structures of a realistic car body frame on the specific absorption rate (SAR) produced by a cell phone when a complete human body model is placed at ...

    • Minimally invasive in vivo human lung tissue bioimpedance measurements during the bronchoscopy procedure 

      Sánchez Terrones, Benjamín; Vandersteen, G.; Martin, I.; Castillo, David; Torrego, A.; Riu Costa, Pere Joan; Schoukens, J.; Bragós Bardia, Ramon (IEEE, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Respiratory diseases, which include diseases of the lung, pleura, bronchial tree, trachea, upper respiratory tract and of the respiratory muscles and nerves, are a common and important cause of illness and death among the ...

    • Minimally invasive lung tissue differentiation using electrical impedance spectroscopy: a comparison of the 3- and 4-electrode methods 

      Company Se, Georgina; Nescolarde Selva, Lexa Digna; Pajares Ruiz, Virginia; Torrego Fernández, Alfons; Riu Costa, Pere Joan; Rosell Ferrer, Francisco Javier; Bragós Bardia, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2021-12-28)
      Article
      Accés obert
      Multiple imaging techniques are used for the diagnosis of lung diseases. The choice of a technique depends on the suspected diagnosis. Computed tomography (CT) of the thorax and positron emission tomography (PET) are imaging ...

    • Numerical assessment in aeronautics for electromagnetic environmental effects 

      Ruiz-Cabello Nuñez, Miguel David; Fernández Romero, Sergio; Pous Solà, Marc; Silva Martínez, Fernando; Fernández Chimeno, Mireya; Riu Costa, Pere Joan; Jauregui Telleria, Ricardo Ignacio (2018-01-01)
      Capítol de llibre
      Accés restringit per política de l'editorial
      Electromagnetic Compatibility for Space Systems Design is a critical scholarly resource that examines the applications of electromagnetic compatibility and electromagnetic interference in the space industry. Featuring ...

    • Performance assessment of EIT measurement systems 

      Riu Costa, Pere Joan; Antón Cardona, Daniel (2010)
      Text en actes de congrés
      Accés obert
      EIT acquisition systems, when regarded as measuring instruments, can be characterized by their inherent characteristics: reproducibility, repeatability and discrimination. The ultimate limit to all three is noise, whether ...

    • Power line impedance characterization of automotive loads at the power line communication frequency range 

      Aragon Homar, Marc; Salinas, Mauricio; Riu Costa, Pere Joan; Silva Martínez, Fernando (2010)
      Text en actes de congrés
      Accés obert
      A complete system able to measure complex impedance, both in magnitude and phase, of an automotive electrical load is designed. The development of such system emerged from the need of measure the impedance of these loads ...

    • Propagation of measurement noise through backprojection reconstruction in electrical impedance tomography 

      Frangi Caregnato, Alejandro; Riu Costa, Pere Joan; Rosell Ferrer, Francisco Javier; Viergever, Max A. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2002-06-30)
      Article
      Accés obert
      A framework to analyze the propagation of measurement noise through backprojection reconstruction algorithms in electrical impedance tomography (EIT) is presented. Two measurement noise sources were considered: noise in ...

    • Sistemas de instrumentación 

      Riu Costa, Pere Joan; Rosell Ferrer, Francisco Javier; Ramos Castro, Juan José (Edicions UPC, 1995)
      Llibre
      Accés restringit a la comunitat UPC
      El núcleo de la obra contiene la descripción de los protocolos físicos y lógicos necesarios para construir un sistema de instrumentación a base de dispositivos comerciales, conectados con un bus IEEE-488 o VXI. Se describen ...