Now showing items 1-20 of 24

  • 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
    Open Access
    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)
    Conference report
    Open Access
    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)
    Conference report
    Open Access
    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)
    Doctoral thesis
    Open Access
    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 ...
  • 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)
    Part of book or chapter of book
    Restricted access - publisher's policy
    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 ...
  • 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)
    Conference lecture
    Open Access
    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
    Open Access
    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 ...
  • 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
    Open Access
    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 ...
  • 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
    Restricted access - publisher's policy
    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 ...
  • 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)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • 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)
    Part of book or chapter of book
    Restricted access - publisher's policy
    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)
    Conference report
    Open Access
    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)
    Conference report
    Open Access
    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
    Open Access
    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)
    Book
    Restricted access to the UPC academic community
    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 ...
  • SIVA UAV: a case study for the EMC analysis of composite air vehicles 

    Cabello, Miguel R.; Vallina Fernández, Sergio Manuel; Pous Solà, Marc; Pascual, Enrique; Angulo, Luis D.; López, Patricia; Riu Costa, Pere Joan; Gutierrez, Guadalupe G.; Mateos, Daniel; Poyatos, David; Fernández Chimeno, Mireya; Alvarez, Jesus; Pantoja, Mario F.; Añón, Manuel; Silva Martínez, Fernando; Bretones, Amelia R.; Trallero, Rafael; Nuño Fernández, Luis; Escot, David; Martin, Rafael G.; Garcia, Salvador G. (2017-08-01)
    Article
    Open Access
    The increased use of carbon-fiber composites in unmanned aerial vehicles is a challenge for their EMC assessment by numerical solvers. For accurate and reliable simulations, numerical procedures should be tested not only ...
  • Skin impedance from 1 Hz to 1 MHz 

    Rosell Ferrer, Francisco Javier; Colominas i Balagué, Josep; Riu Costa, Pere Joan; Pallàs Areny, Ramon; Webster, John G. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1988-08-01)
    Article
    Open Access
    We measured the impedance of skin coated with gel, but otherwise unprepared from 1 Hz to 1 MHz at ten sites on the thorax, leg, and forehead of ten subjects. For a 1 cm2 area, the 1 Hz impedance varied from 10 kΩ to 1 MΩ, ...
  • Tidal volume monitoring by a set of tetrapolar impedance measurements selected from the 16-electrodes arrangement used inelectrical impedance tomography (EIT) technique. Calibration equations in a group of healthy males 

    Balleza Ordaz, José Marco; Pérez Alday, Erick Andrés; Vargas Luna, José Miguel; Kashina, Svetlana; Huerta Franco, María-Raquel; Torres González, Luis Adolfo; Riu Costa, Pere Joan (2016-03-01)
    Article
    Open Access
    Previously, our research group obtained a set of calibration equations for being used by an electricalimpedance tomograph (EIT). All equations transform the impedance changes into a measurable volumesignal in a group of ...
  • tidal volume monitoring by electrical impedance tomography (EIT) using different regions of interest (ROI): calibration equations 

    Balleza Ordaz, José Marco; Vargas Luna, Miguel; Pérez Alday, Erick Andrés; Riu Costa, Pere Joan (2015-04-01)
    Article
    Open Access
    set of calibration equations was previously obtained to transform the lung impedance changes obtained by electrical impedance tomography (EIT), using all frame's elements, into a measurable volume signal. In order to study ...
  • Tidal volume monitoring with electrical impedance tomography (EIT) on COPD patients : relationship between EIT and diffusion lung transfer (DL,CO) 

    Balleza, Marco; Casan, P.; Riu Costa, Pere Joan (Springer Verlag, 2009-09)
    Conference report
    Restricted access - publisher's policy
    Equations used to estimate ventilation out of EIT images, validated on healthy volunteers show a significant bias and a larger variance when applied to COPD patients. The differences in estimation values were found to be ...