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Listar por autor "Berjano Zanón, Enrique"

Mostrando ítems 1-20 de 162

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A clinically-oriented computer model for radiofrequency ablation of hepatic tissue with internally cooled wet electrode

Ewertowska, Elzbieta; Quesada-Diez, Rita; Radosevic, A.; Andaluz, Anna; Moll, Xavier; García Arnás, F.; Berjano, Enrique; Burdío Pinilla, Fernando; Trujillo Guillen, Macarena (Taylor & Francis, 2019)

[EN] Purpose: To improve the computer modelling of radiofrequency ablation (RFA) by internally cooled wet (ICW) electrodes with added clinically oriented features. Methods: An improved RFA computer model by ICW electrode ...
A cooled intraesophageal balloon to prevent thermal injury during endocardial surgical radiofrequency ablation of the left atrium: a finite element study

Berjano, Enrique; Hornero, Fernando (IOP Publishing, 2015-10-21)

[EN] Recent clinical studies on intraoperative monopolar radiofrequency ablation of atrial fibrillation have reported some cases of injury to the esophagus. The aim of this study was to perform computer simulations using ...
A new single-instrument technique for parenchyma division and hemostasis in liver resection: a clinical feasibility study

Burdío, Fernando; Grande, Luis; Berjano, Enrique; Martinez-Serrano, Maria; Poves, Ignasi; Burdío, José M.; Navarro, Ana; Güemes, Antonio (Elsevier, 2010-12)

[EN] The objective of this study was to evaluate the clinical feasibility of a new technique for liver resection based on a radiofrequency-assisted (485 kHz) device that has shown high performance in the animal setting ...
A proposal to encourage intuitive learning in a senior-level analogue electronics course

Berjano, Enrique; Lozano Nieto, Albert (Taylor & Francis, 2011-05)

One of the most important issues in the reorganisation of engineering education is to consider new pedagogical techniques to help students develop skills and an adaptive expertise. This expertise consists of being able ...
An Analytical Solution for Radiofrequency Ablation with a Cooled Cylindrical Electrode

Romero-Méndez, Ricardo; Berjano, Enrique (Hindawi Limited, 2017)

[EN] We present an analytical solution to the electrothermal mathematical model of radiofrequency ablation of biological tissue using a cooled cylindrical electrode. The solution presented here makes use of the method of ...
Analytical Model Based on a Cylindrical Geometry to Study RF Ablation with Needle-Like Internally Cooled Electrode

López Molina, Juan Antonio; Rivera Ortun, María José; Berjano Zanón, Enrique (Hindawi Publishing Corporation, 2012)

Radiofrequency (RF) ablation with internally cooled needle-like electrodes is widely used in medical techniques such as tumor ablation. The device consists of a metallic electrode with an internal liquid cooling system ...
Analytical Solution for Electrical Problem Forced by a Finite-Length Needle Electrode: Implications in Electrostimulation

Romero-Méndez, Ricardo; Pérez-Gutiérrez, Francisco G.; Oviedo-Tolentino, Francisco; Berjano, Enrique (Hindawi Limited, 2019)

[EN] Needle electrodes, widely used in clinical procedures, are responsible for creating an electric field in the treated biological tissue. This is achieved by setting a constant voltage along the length of their metallic ...
Analytical transient-time solution for temperature in non perfused tissue during radiofrequency ablation

López Molina, Juan Antonio; Rivera Ortun, María José; Berjano Zanón, Enrique (Elsevier, 2016-10-26)

[EN] Radiofrequency ablation (RFA) with internally cooled needle-like electrodes is a technique widely used to destroy cancer cells. In a previous study we obtained the analytical solution of the biological heat equation ...
Análisis y diseño del "power tree" de un equipo electrónico para análisis clínicos

Sánchez Hernández, Lydia (Universitat Politècnica de València, 2021-09-28)

[ES] El objetivo del TFG es el diseño y verificación por simulación del sistema de distribución de la alimentación (power tree) de un equipo electrónico para análisis clínicos. A partir de una fuente primaria de tensión ...
Análisis, diseño y desarrollo de "shields" de Arduino para procesamiento de señales fisiológicas

Pérez Talens, Arnau (Universitat Politècnica de València, 2016-10-28)

[ES] Este proyecto surge a partir de la idea de Arduino, construir aparatos electrónicos hardware abierto, de tal forma que cualquier persona pueda aprender el funcionamiento. Este proyecto se centra en los sensores ...
Applicator for RF Thermokeratoplasty: Feasibility Study Using Theoretical Modeling and Ex Vivo Experiments

Trujillo Guillen, Macarena; Ribera, Vicente; Quesada, Rita; Berjano, Enrique (Springer Verlag (Germany), 2012)

Radiofrequency (RF) thermokeratoplasty uses RF currents to alter the curvature of the cornea by means of thermal lesions. An RF applicator which combined a microkeratome suction ring and a circular electrode was designed ...
Aspectos teóricos sobre la biofísica de la radiofrecuencia aplicada al tratamiento del dolor

Muñoz, Víctor; Pérez, Juan J; Pérez-Cajaraville, J.J.; Berjano, Enrique (Arán Ediciones S.L., 2014-12)

[EN] Interventional techniques for pain treatment have importantly increased in recent years, and particularly those based on radiofrequency energy, both thermal and pulsed. This report clarifies some important concepts ...
Automatización del depósito de fermentación en procesos de vinificación

Cantos Villaescusa, María (Universitat Politècnica de València, 2019-07-26)

[ES] El objetivo de este trabajo es diseñar un sistema de automatización para controlar las variables implicadas en la fermentación del mosto. El trabajo incluye un estudio sobre las variables relevantes y ...
Black-box modeling to estimate tissue temperature during radiofrequency catheter cardiac ablation: feasibility study on an agar phantom model

Blasco-Giménez, Ramón; Lequerica, Juan L.; Herrero, María; Hornero, Fernando; Berjano, Enrique (IOP Publishing, 2010-04)

[EN] The aim of this work was to study linear deterministic models to predict tissue temperature during radiofrequency cardiac ablation (RFCA) by measuring magnitudes such as electrode temperature, power and impedance ...
Can electroporation previous to radiofrequency hepatic ablation enlarge thermal lesion size? A feasibility study based on theoretical modelling and in vivo experiments

Trujillo Guillen, Macarena; Castellvi, Quim; Burdío, Fernando; Sánchez Velázquez, Patricia; Ivorra, Antoni; Andaluz, Anna; Berjano, Enrique (Informa Healthcare, 2013-05)

Purpose: The aim of this study was to assess the feasibility of a hybrid ablative technique based on applying electroporation (EP) pulses just before conducting radiofrequency ablation (RFA). The rationale was that the ...
Can Fat Deposition After Myocardial Infarction Alter the Performance of RF Catheter Ablation of Scar-Related Ventricular Tachycardia?: Results from a Computer Modeling Study

Pérez, Juan J; D'Avila, Andre; Aryana, Arash; Trujillo Guillen, Macarena; Berjano, Enrique (Wiley, 2016-08)

Effect of Fat Deposition on the Performance in RF Ablation IntroductionThe outcomes of catheter ablation of scar-mediated ventricular tachycardia (VT) remain far from perfect. The presence of fat as a component of the ...
Caracterización de la onda de pulso arterial, velocidad (PWV) y morfología (DVP), como estimadores de la presión arterial

Padilla Hernández, Juan Manuel (Universitat Politècnica de València, 2010-05-07)

Los vasos sanguíneos poseen características estructurales y funcionales que disminuyen o amortiguan la pulsatilidad del flujo y la presión generada por la eyección ventricular. Este amortiguamiento determina que el flujo ...
Clinical case report: endoluminal thermal ablation of main pancreatic duct for patients at high risk of postoperative pancreatic fistula after pancreaticoduodenectomy

Ielpo, Benedetto; Pueyo-Périz, Eva M.; Radosevic, Aleksandar; Andaluz, Anna; Berjano, Enrique; Grande, Luis; Sánchez-Velázquez, Patricia; Burdío, Fernando (Taylor & Francis, 2021-01-01)

[EN] Purpose Multiple attempts have been made to manage the pancreatic stump and the pancreatic duct in order to reduce the rate of postoperative pancreatic fistula (POPF) after pancreaticoduodenectomy (PD), however ...
Comparative Analysis of Different Methods of Modeling the Thermal Effect of Circulating Blood Flow During RF Cardiac Ablation

González Suárez, Ana; Berjano, Enrique (Institute of Electrical and Electronics Engineers (IEEE), 2016-02)

Our aim was to compare the different methods of modeling the effect of circulating blood flow on the thermal lesion dimensions created by radio frequency (RF) cardiac ablation and on the maximum blood temperature. ...
Comparison of enthalpy method and water fraction method to mathematically model water vaporization during RF ablation

Fatieieva, Yuliia; Almendárez, Pedro; Romero-Méndez, Ricardo; Berjano, Enrique; Trujillo Guillen, Macarena (Cosmos Scholars Publishing House, 2014-09)

[EN] During high-temperature energy-based therapies such as radiofrequency ablation (RFA) the target tissue reaches temperatures around 100ºC, which causes tissue dehydration by water vaporization. In order to be as ...