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Listar por palabra clave "Computer modeling"

Mostrando ítems 1-20 de 25

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A comprehensive discrete-time computer modeling of acoustic Transmission Line loudspeakers

Escolano Carrasco, José; Pueo Ortega, Basilio; López Monfort, José Javier (Elsevier, 2011-10)

The Transmission Line loudspeaker is an audio loudspeaker enclosure topology devoted to extending the low frequency range near the loudspeaker frequency resonance. A few models based on physical properties of damped pipes ...
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. ...
Computational Models and Experimentation for Radiofrequency-based Ablative Techniques

González Suárez, Ana (Universitat Politècnica de València, 2014-03-14)

Las técnicas ablativas basadas en energía por radiofrecuencia (RF) se emplean con el fin de lograr un calentamiento seguro y localizado en el tejido biológico. En los últimos años ha habido un rápido crecimiento en el ...
Computer modeling and ex vivo experiments with a (saline-linked) irrigated electrode for RF-assisted heating

Arenas Puig, Francisco Javier; Pérez Martínez, Juan José; Trujillo Guillen, Macarena; Berjano Zanón, Enrique (BioMed Central, 2014-12-12)

Background Externally irrigated radiofrequency (RF) electrodes have been widely used to thermally ablate tumors in surface tissue and to thermally coagulate the transection plane during a surgical resection. As far as ...
Computer modeling and experimentation in radiofrequiency-based minimally invasive therapies

Ewertowska, Elzbieta (Universitat Politècnica de València, 2020-01-07)

[ES] La ablación por radiofrecuencia (RF) se ha convertido en una técnica ablativa importante, ampliamente utilizada en el área de las terapias mínimamente invasivas de la medicina moderna. El avance en el campo de las ...
Computer modeling of radiofrequency cardiac ablation: 30 years of bioengineering research

González-Suárez, Ana; Pérez, Juan J; Irastorza, Ramiro M.; D Avila, Andre; Berjano, Enrique (Elsevier, 2022-02)

[EN] This review begins with a rationale of the importance of theoretical, mathematical and computational models for radiofrequency (RF) catheter ablation (RFCA). We then describe the historical context in which each model ...
Computer modelling of RF ablation in cortical osteoid osteoma: Assessment of the insulating effect of the reactive zone

Irastorza, Ramiro M.; Trujillo Guillen, Macarena; Martel Villagran, Jose; Berjano, Enrique (Taylor & Francis, 2016-02-10)

Purpose: The aim was to study by computer simulations the insulating role of the reactive zone surrounding a cortical osteoid osteoma (OO) in terms of electrical and thermal performance during radiofrequency ablation ...
Could the heat sink effect of blood flow inside large vessels protect the vessel wall from thermal damage during RF-assisted surgical resection?

González Suárez, Ana; Trujillo Guillen, Macarena; Burdío, Fernando; Andaluz, Anna; Berjano, Enrique (American Association of Physicists in Medicine: Medical Physics, 2014-08)

Purpose: To assess by means of computer simulations whether the heat sink effect inside a large vessel (portal vein) could protect the vessel wall from thermal damage close to an internally cooled electrode during ...
Disturbing Effect of Intra-Tissue Temperature Sensors in Pre-Clinical Experimental Studies of Radiofrequency Cardiac Ablation: A Computer-Based Modeling Study

Cuenca-Dacal, Luis; Berjano, Enrique; González-Suárez, Ana; Pérez, Juan J (MDPI AG, 2023-04-11)

[EN] Background: Preclinical studies on radiofrequency (RF) cardiac ablation (RFCA) use very small temperature sensors in specific positions in the tissue subjected to RF heating. Despite the sensors' small size, the ...
Effect of the relative position of electrode and stellate ganglion during thermal radiofrequency ablation: a simulation study

Irastorza, Ramiro M.; Bovaira, Maite; García-Vitoria, Carles; Muñoz, Víctor; Berjano, Enrique (Taylor & Francis, 2021-08-31)

[EN] Purpose Stellate ganglion (SG) block by thermal radiofrequency ablation (RFA) is frequently conducted as a therapeutic intervention for sympathetic-maintained and neuropathic pain syndromes. RFA's partial lack of ...
Electrical and thermal effects of esophageal temperature probes on radiofrequency catheter ablation of atrial fibrillation: results from a computational modeling study

Pérez, Juan J; D Avila, Andre; Aryana, Arash; Berjano, Enrique (Blackwell Publishing, 2015)

[EN] Electrical and Thermal Effects of Esophageal Temperature Probes IntroductionLuminal esophageal temperature (LET) monitoring is commonly employed during catheter ablation of atrial fibrillation (AF) to detect high ...
Experimental and computational model approach to assess the photothermal effects in transparent nanocrystalline yttria stabilized zirconia cranial implant

Cano-Velázquez, Mildred S.; Bon Corbín, José; Llamazares, M.; Camacho-López, Santiago; Aguilar, Guillermo; Hernández-Cordero, Juan; Trujillo Guillen, Macarena (Elsevier, 2022-06)

[EN] Background and objective: In the last few years, we have been exploring the use of transparent nanocrystalline yttria-stabilized zirconia (nc-YSZ) ceramics as a biomedical transparent cranial implant, referred as the ...
How far the zone of heat-induced transient block extends beyond the lesion during RF catheter cardiac ablation

Pérez, Juan J; Berjano, Enrique; González Suárez, Ana (Taylor & Francis, 2023-01-02)

[EN] Purpose While radiofrequency catheter ablation (RFCA) creates a lesion consisting of the tissue points subjected to lethal heating, the sublethal heating (SH) undergone by the surrounding tissue can cause transient ...
How intramyocardial fat can alter the electric field distribution during Pulsed Field Ablation (PFA): Qualitative findings from computer modeling.

Pérez, Juan J.; González-Suárez, Ana (Public Library of Science, 2023-11-02)

[EN] Even though the preliminary experimental data suggests that cardiac Pulsed Field Ablation (PFA) could be superior to radiofrequency ablation (RFA) in terms of being able to ablate the viable myocardium separated from ...
Impact of surrounding tissue-type and peri-electrode gap in stereoelectroencephalography guided (SEEG) radiofrequency thermocoagulation (RF-TC): a computational study

Collavini, Santiago; Pérez, Juan J; Berjano, Enrique; Fernández-Corazza, Mariano; Oddo, Silvia; Irastorza, Ramiro Miguel (Taylor & Francis, 2024-06-16)

[EN] Purpose: To use computational modeling to provide a complete and logical description of the electrical and thermal behavior during stereoelectroencephalography-guided (SEEG) radiofrequency thermocoagulation (RF-TC). Methods: ...
In Silico Modelling to Assess the Electrical and Thermal Disturbance Provoked by a Metal Intracoronary Stent during Epicardial Pulsed Electric Field Ablation

González-Suárez, Ana; Pérez, Juan J; O Brien, Barry; Elahi, Adnan (MDPI AG, 2022-12)

[EN] Background: Pulsed Electric Field (PEF) ablation has been recently proposed to ablate cardiac ganglionic plexi (GP) aimed to treat atrial fibrillation. The effect of metal intracoronary stents in the vicinity of the ...
In silico screening of the impact of hERG channel kinetic abnormalities on channel block and susceptibility to acquired long QT syndrome

Romero Pérez, Lucia; Trénor Gomis, Beatriz Ana; Yang, Pei-Chi; Saiz Rodríguez, Francisco Javier; Clancy, Colleen E. (Elsevier, 2014-07)

Accurate diagnosis of predisposition to long QT syndrome is crucial for reducing the risk of cardiac arrhythmias. In recent years, drug-induced provocative tests have proved useful to unmask some latent mutations linked ...
In-silico modeling to compare radiofrequency-induced thermal lesions created on myocardium and thigh muscle

Pérez, Juan J; Berjano, Enrique; González-Suárez, Ana (MDPI AG, 2022-07-16)

[EN] Beating heart (BH) and thigh muscle (TM) are two pre-clinical models aimed at studying the lesion sizes created by radiofrequency (RF) catheters in cardiac ablation. Previous experimental results have shown that thermal ...
Lessons Learned from Multi-scale Modeling of the Failing Heart

Gómez García, Juan Francisco; Cardona-Urrego, Karen Eliana; Trénor Gomis, Beatriz Ana (Elsevier, 2015-12)

[EN] Heart failure constitutes a major public health problem worldwide. Affected patients experience a number of changes in the electrical function of the heart that predispose to potentially lethal cardiac arrhythmias. ...
Limitations of Baseline Impedance, Impedance Drop and Current for Radiofrequency Catheter Ablation Monitoring: Insights from In Silico Modeling

Irastorza, Ramiro M.; Maher, Timothy; Barkagan, Michael; Liubasuskas, Rokas; Pérez, Juan J; Berjano, Enrique; D Avila, Andre (MDPI AG, 2022-10-03)

[EN] Background: Baseline impedance, radiofrequency current, and impedance drop during radiofrequency catheter ablation are thought to predict effective lesion formation. However, quantifying the contributions of local ...