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138 results on '"Sebastián, Rafael"'

1. Unsupervised stratification of patients with myocardial infarction based on imaging and in-silico biomarkers

Author

Serra, Dolors, Romero, Pau, Franco, Paula, Bernat, Ignacio, Lozano, Miguel, Garcia-Fernandez, Ignacio, Soto, David, Berruezo, Antonio, Camara, Oscar, and Sebastian, Rafael

Subjects
Computer Science - Computational Engineering, Finance, and Science, Physics - Medical Physics
Abstract

This study presents a novel methodology for stratifying post-myocardial infarction patients at risk of ventricular arrhythmias using patient-specific 3D cardiac models derived from late gadolinium enhancement cardiovascular magnetic resonance (LGE-CMR) images. The method integrates imaging and computational simulation with a simplified cellular automaton model, Arrhythmic3D, enabling rapid and accurate VA risk assessment in clinical timeframes. Applied to 51 patients, the model generated thousands of personalized simulations to evaluate arrhythmia inducibility and predict VA risk. Key findings include the identification of slow conduction channels (SCCs) within scar tissue as critical to reentrant arrhythmias and the localization of high-risk zones for potential intervention. The Arrhythmic Risk Score (ARRISK), developed from simulation results, demonstrated strong concordance with clinical outcomes and outperformed traditional imaging-based risk stratification. The methodology is fully automated, requiring minimal user intervention, and offers a promising tool for improving precision medicine in cardiac care by enhancing patient-specific arrhythmia risk assessment and guiding treatment strategies.

Published
2024

2. A robust shape model for blood vessels analysis

Author

Romero, Pau, Pedrós, Abel, Sebastian, Rafael, Lozano, Miguel, and García-Fernández, Ignacio

Subjects
Computer Science - Computational Engineering, Finance, and Science, Physics - Medical Physics
Abstract

The availability of digital twins for the cardiovascular system will enable insightful computational tools both for research and clinical practice. This, however, demands robust and well defined models and methods for the different steps involved in the process. We present a vessel coordinate system (VCS) that enables the unanbiguous definition of locations in a vessel section, by adapting the idea of cylindrical coordinates to the vessel geometry. Using the VCS model, point correspondence can be defined among different samples of a cohort, allowing data transfer, quantitative comparison, shape coregistration or population analysis. Furthermore, the VCS model allows for the generation of specific meshes (e.g. cylindrical grids, ogrids) necessary for an accurate reconstruction of the geometries used in fluid simulations. We provide the technical details for coordinates computation and discuss the assumptions taken to guarantee that they are well defined. The VCS model is tested in a series of applications. We present a robust, low dimensional, patient specific vascular model and use it to study phenotype variability analysis of the thoracic aorta within a cohort of patients. Point correspondence is exploited to build an haemodynamics atlas of the aorta for the same cohort. The atlas originates from fluid simulations (Navier-Stokes with Finite Volume Method) conducted using OpenFOAMv10. We finally present a relevant discussion on the VCS model, which covers its impact in important areas such as shape modeling and computer fluids dynamics (CFD).

Published
2023

3. Digital Twinning of the Human Ventricular Activation Sequence to Clinical 12-lead ECGs and Magnetic Resonance Imaging Using Realistic Purkinje Networks for in Silico Clinical Trials

Author

Camps, Julia, Berg, Lucas Arantes, Wang, Zhinuo Jenny, Sebastian, Rafael, Riebel, Leto Luana, Doste, Ruben, Zhou, Xin, Sachetto, Rafael, Coleman, James, Lawson, Brodie, Grau, Vicente, Burrage, Kevin, Bueno-Orovio, Alfonso, Weber, Rodrigo, and Rodriguez, Blanca

Subjects
Physics - Medical Physics, Quantitative Biology - Tissues and Organs
Abstract

Cardiac in silico clinical trials can virtually assess the safety and efficacy of therapies using human-based modelling and simulation. These technologies can provide mechanistic explanations for clinically observed pathological behaviour. Designing virtual cohorts for in silico trials requires exploiting clinical data to capture the physiological variability in the human population. The clinical characterisation of ventricular activation and the Purkinje network is challenging, especially non-invasively. Our study aims to present a novel digital twinning pipeline that can efficiently generate and integrate Purkinje networks into human multiscale biventricular models based on subject-specific clinical 12-lead electrocardiogram and magnetic resonance recordings. Essential novel features of the pipeline are the human-based Purkinje network generation method, personalisation considering ECG R wave progression as well as QRS morphology, and translation from reduced-order Eikonal models to equivalent biophysically-detailed monodomain ones. We demonstrate ECG simulations in line with clinical data with clinical image-based multiscale models with Purkinje in four control subjects and two hypertrophic cardiomyopathy patients (simulated and clinical QRS complexes with Pearson's correlation coefficients > 0.7). Our methods also considered possible differences in the density of Purkinje myocardial junctions in the Eikonal-based inference as regional conduction velocities. These differences translated into regional coupling effects between Purkinje and myocardial models in the monodomain formulation. In summary, we demonstrate a digital twin pipeline enabling simulations yielding clinically-consistent ECGs with clinical CMR image-based biventricular multiscale models, including personalised Purkinje in healthy and cardiac disease conditions., Comment: Paper under revision

Published
2023

4. Endomarketing como estrategia para generar motivación de los colaboradores en micro y pequeñas empresas de Perú

Author

José Cayetano Vergaray Huamán, Juan Carlos Reyes Ulfe, Francisco Rafael León Cavero, and Sebastián Rafael León León

Subjects
endomarketing, motivación, desarrollo de personal, adecuación al trabajo, pequeñas y medianas empresas., Political science (General), JA1-92, Social sciences (General), H1-99
Abstract

El potencial humano es el capital más valioso en las micro y pequeñas empresas, con sus actividades desarrolladas de manera efectiva permiten el cumplimiento de las metas propuestas, para lograr estos resultados es necesario desarrollar estrategias que permitan motivarlos, para lograrlo se cuenta con el Endomarketing. La investigación está enfocada en conocer cómo la aplicación de las estrategias de endomarketing generan la motivación de los colaboradores de las micro y pequeñas empresas, en el distrito de Barranca-Perú. El enfoque aplicado fue cuantitativo, de tipo descriptivo – correlacional, se utilizó la técnica de la encuesta y como instrumento el cuestionario, la muestra estuvo conformada por 120 colaboradores de las micro y pequeñas empresas. Los resultados muestran que la aplicación del Endomarketing y la motivación es de nivel medio; asimismo, se evidencia que el desarrollo de personal y la adecuación en el trabajo, son estrategias importantes para generar que los trabajadores desarrollen su trabajo de manera intensa, y con persistencia. En conclusión, los dueños de las micro y pequeñas empresas, deben prestar atención a estas estrategias para fortalecerlas y replantear aquellas de retención de personal y comunicación interna, para fomentar la identificación con la empresa y el adecuado desempeño de los trabajadores.

Published
2024
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5. Patient Stratification Based on Fast Simulation of Cardiac Electrophysiology on Digital Twins

Author

Serra, Dolors, Romero, Pau, Lozano, Miguel, Garcia-Fernandez, Ignacio, Penela, Diego, Berruezo, Antonio, Camara, Oscar, Rodrigo, Miguel, Gil, Miriam, Sebastian, Rafael, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Camara, Oscar, editor, Puyol-Antón, Esther, editor, Sermesant, Maxime, editor, Suinesiaputra, Avan, editor, Tao, Qian, editor, Wang, Chengyan, editor, and Young, Alistair, editor

Published
2024
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8. Digital twinning of the human ventricular activation sequence to Clinical 12-lead ECGs and magnetic resonance imaging using realistic Purkinje networks for in silico clinical trials

Author

Camps, Julia, Berg, Lucas Arantes, Wang, Zhinuo Jenny, Sebastian, Rafael, Riebel, Leto Luana, Doste, Ruben, Zhou, Xin, Sachetto, Rafael, Coleman, James, Lawson, Brodie, Grau, Vicente, Burrage, Kevin, Bueno-Orovio, Alfonso, Weber dos Santos, Rodrigo, and Rodriguez, Blanca

Published
2024
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11. Personalized Fast Electrophysiology Simulations to Evaluate Arrhythmogenicity of Ventricular Slow Conduction Channels

Author

Serra, Dolors, Franco, Paula, Romero, Pau, García-Fernández, Ignacio, Lozano, Miguel, Soto, David, Penela, Diego, Berruezo, Antonio, Camara, Oscar, Sebastian, Rafael, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Camara, Oscar, editor, Puyol-Antón, Esther, editor, Qin, Chen, editor, Sermesant, Maxime, editor, Suinesiaputra, Avan, editor, Wang, Shuo, editor, and Young, Alistair, editor

Published
2022
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12. A rule-based method to model myocardial fiber orientation in cardiac biventricular geometries with outflow tracts

Author

Doste, Ruben, Soto-Iglesias, David, Bernardino, Gabriel, Alcaine, Alejandro, Sebastian, Rafael, Giffard-Roisin, Sophie, Sermesant, Maxime, Berruezo, Antonio, Sanchez-Quintana, Damian, and Camara, Oscar

Subjects
Physics - Medical Physics, Computer Science - Computational Engineering, Finance, and Science
Abstract

Rule-based methods are often used for assigning fiber orientation to cardiac anatomical models. However, existing methods have been developed using data mostly from the left ventricle. As a consequence, fiber information obtained from rule-based methods often does not match histological data in other areas of the heart such as the right ventricle, having a negative impact in cardiac simulations beyond the left ventricle. In this work, we present a rule-based method where fiber orientation is separately modeled in each ventricle following observations from histology. This allows to create detailed fiber orientation in specific regions such as the endocardium of the right ventricle, the interventricular septum and the outflow tracts. We also carried out electrophysiological simulations involving these structures and with different fiber configurations. In particular, we built a modelling pipeline for creating patient-specific volumetric meshes of biventricular geometries, including the outflow tracts, and subsequently simulate the electrical wavefront propagation in outflow tract ventricular arrhythmias with different origins for the ectopic focus. The resulting simulations with the proposed rule-based method showed a very good agreement with clinical parameters such as the 10 ms isochrone ratio in a cohort of nine patients suffering from this type of arrhythmia. The developed modelling pipeline confirms its potential for an in silico identification of the site of origin in outflow tract ventricular arrhythmias before clinical intervention.

Published
2018

13. Intra-cardiac Signatures of Atrial Arrhythmias Identified by Machine Learning and Traditional Features

Author

Rodrigo, Miguel, Pagano, Benjamin, Takur, Sumiran, Liberos, Alejandro, Sebastián, Rafael, Narayan, Sanjiv M., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Ennis, Daniel B., editor, Perotti, Luigi E., editor, and Wang, Vicky Y., editor

Published
2021
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14. Simplified Electrophysiology Modeling Framework to Assess Ventricular Arrhythmia Risk in Infarcted Patients

Author

Serra, Dolors, Romero, Pau, Lozano, Miguel, García-Fernández, Ignacio, Liberos, Alejandro, Rodrigo, Miguel, Berruezo, Antonio, Bueno-Orovio, Alfonso, Sebastian, Rafael, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Ennis, Daniel B., editor, Perotti, Luigi E., editor, and Wang, Vicky Y., editor

Published
2021
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15. Assessment of Geometric Models for the Approximation of Aorta Cross-Sections

Author

Romero, Pau, Serra, Dolors, Lozano, Miguel, Sebastián, Rafael, García-Fernández, Ignacio, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Ennis, Daniel B., editor, Perotti, Luigi E., editor, and Wang, Vicky Y., editor

Published
2021
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16. Prediction of CRT Activation Sequence by Personalization of Biventricular Models from Electroanatomical Maps

Author

Gomez, Juan Francisco, Trenor, Beatriz, Sebastian, Rafael, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Pop, Mihaela, editor, Sermesant, Maxime, editor, Camara, Oscar, editor, Zhuang, Xiahai, editor, Li, Shuo, editor, Young, Alistair, editor, Mansi, Tommaso, editor, and Suinesiaputra, Avan, editor

Published
2020
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20. Endomarketing como estrategia para generar motivación de los colaboradores en micro y pequeñas empresas de Perú.

Author

Vergaray Huamán, José Cayetano, Reyes Ulfe, Juan Carlos, León Cavero, Francisco Rafael, and León León, Sebastián Rafael

Abstract

Copyright of Revista de Ciencias Sociales (13159518) is the property of Revista de Ciencias Sociales de la Universidad del Zulia Venezuela and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2024

21. A Rule-Based Method to Model Myocardial Fiber Orientation for Simulating Ventricular Outflow Tract Arrhythmias

Author

Doste, Rubén, Soto-Iglesias, David, Bernardino, Gabriel, Sebastian, Rafael, Giffard-Roisin, Sophie, Cabrera-Lozoya, Rocio, Sermesant, Maxime, Berruezo, Antonio, Sánchez-Quintana, Damián, Camara, Oscar, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Pop, Mihaela, editor, and Wright, Graham A, editor

Published
2017
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22. Quasi-Conformal Technique for Integrating and Validating Myocardial Tissue Characterization in MRI with Ex-Vivo Human Histological Data

Author

Soto-Iglesias, David, Penela, Diego, Planes, Xavier, Zimmer, Veronika, Acosta, Juan, Andreu, David, Piella, Gemma, Sebastian, Rafael, Sancher-Quintana, Damian, Berruezo, Antonio, Camara, Oscar, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Mansi, Tommaso, editor, McLeod, Kristin, editor, Pop, Mihaela, editor, Rhode, Kawal, editor, Sermesant, Maxime, editor, and Young, Alistair, editor

Published
2017
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23. Global trends in building energy management systems (BEMS): A science mapping approach.

Author

Zarate-Perez, Eliseo, Santos-Mejía, Cesar, and Sebastián, Rafael

Subjects
ENERGY management, WIRELESS sensor networks, BIBLIOMETRICS, ENERGY consumption, PHOTOVOLTAIC power systems, GRIDS (Cartography)
Abstract

The building systems are being projected in the improvement of the efficiency of the total energy consumption and the integration of renewable energies. However, buildings have become increasingly complex because they integrate different types of local energy generation, distribution, consumption, and storage elements. That is why energy management is considered an optimization problem. Therefore, the objective of this review work was to establish a scientific map of building energy management systems (BEMS) and to identify the scientific production that identifies future research projections. In this sense, the bibliometric review methodology was used to quantify the performance, quality, and impact of the research field. The scientific mapping approach analyzes the co-occurrence of terms through clustering techniques and performance analysis to detect and visualize conceptual subdomains of BEMS. The results show five thematic areas in two evaluated periods: Wireless sensor networks (WSN) and office buildings as leading themes in the period 2000 – 2015. While photovoltaic systems (PVS) and internet of things (IoT) are identified as the important issues for the period 2016 – 2022. The most challenging issues of the BEMS is to maximize energy efficiency by minimizing energy losses and consumption. These concepts have given rise to the IoT, which is shown as a motor theme in the strategic map of bibliometric analysis. However, the thematic concept of the Internet of Energy (IoE) in energy monitoring and control in buildings through bidirectional communication between the smart grid and BEMS is appreciated. Therefore, this review highlights IoT and IoE-based BEMS power management as key technologies to support future advanced BEMS implementation. [ABSTRACT FROM AUTHOR]

Published
2023
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25. Estimation of Electrical Pathways Finding Minimal Cost Paths from Electro-Anatomical Mapping of the Left Ventricle

Author

Cárdenes, Rubén, Sebastian, Rafael, Soto-Iglesias, David, Andreu, David, Fernández-Armenta, Juan, Bijnens, Bart, Berruezo, Antonio, Camara, Oscar, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Camara, Oscar, editor, Mansi, Tommaso, editor, Pop, Mihaela, editor, Rhode, Kawal, editor, Sermesant, Maxime, editor, and Young, Alistair, editor

Published
2014
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28. Sensitivity Analysis of Mesh Warping and Subsampling Strategies for Generating Large Scale Electrophysiological Simulation Data

Author

Hoogendoorn, Corné, Pashaei, Ali, Sebastian, Rafael, Sukno, Federico M., Cámara, Oscar, Frangi, Alejandro F., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Metaxas, Dimitris N., editor, and Axel, Leon, editor

Published
2011
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29. Effect of Scar Development on Fast Electrophysiological Models of the Human Heart: In-Silico Study on Atlas-Based Virtual Populations

Author

Pashaei, Ali, Hoogendoorn, Corné, Sebastián, Rafael, Romero, Daniel, Cámara, Oscar, Frangi, Alejandro F., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Metaxas, Dimitris N., editor, and Axel, Leon, editor

Published
2011
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30. Towards High Resolution Computational Models of the Cardiac Conduction System: A Pipeline for Characterization of Purkinje-Ventricular-Junctions

Author

Romero, Daniel, Sachse, Frank B., Sebastian, Rafael, Frangi, Alejandro F., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Metaxas, Dimitris N., editor, and Axel, Leon, editor

Published
2011
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32. Personalization of Fast Conduction Purkinje System in Eikonal-Based Electrophysiological Models with Optical Mapping Data

Author

Camara, Oscar, Pashaei, Ali, Sebastian, Rafael, Frangi, Alejandro F., Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Camara, Oscar, editor, Pop, Mihaela, editor, Rhode, Kawal, editor, Sermesant, Maxime, editor, Smith, Nic, editor, and Young, Alistair, editor

Published
2010
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33. Influence of Geometric Variations on LV Activation Times: A Study on an Atlas-Based Virtual Population

Author

Hoogendoorn, Corné, Pashaei, Ali, Sebastián, Rafael, Sukno, Federico M., Cámara, Oscar, Frangi, Alejandro F., Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Camara, Oscar, editor, Pop, Mihaela, editor, Rhode, Kawal, editor, Sermesant, Maxime, editor, Smith, Nic, editor, and Young, Alistair, editor

Published
2010
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34. Modeling Drug Effects on Personalized 3D Models of the Heart: A Simulation Study

Author

Sebastian, Rafael, Heidenreich, Elvio, Dux-Santoy, Lydia, Rodriguez, Jose F., Ferrero, Jose Maria, Saiz, Javier, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Camara, Oscar, editor, Pop, Mihaela, editor, Rhode, Kawal, editor, Sermesant, Maxime, editor, Smith, Nic, editor, and Young, Alistair, editor

Published
2010
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35. Atlas Construction and Image Analysis Using Statistical Cardiac Models

Author

De Craene, Mathieu, Sukno, Federico M., Tobon-Gomez, Catalina, Butakoff, Constantine, Figueras i Ventura, Rosa M., Hoogendoorn, Corné, Piella, Gemma, Duchateau, Nicolas, Muñoz-Moreno, Emma, Sebastian, Rafael, Camara, Oscar, Frangi, Alejandro F., Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Camara, Oscar, editor, Pop, Mihaela, editor, Rhode, Kawal, editor, Sermesant, Maxime, editor, Smith, Nic, editor, and Young, Alistair, editor

Published
2010
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36. The Purkinje System and Cardiac Geometry: Assessing Their Influence on the Paced Heart

Author

Romero, Daniel, Sebastian, Rafael, Bijnens, Bart H., Zimmerman, Viviana, Boyle, Patrick M., Vigmond, Edward J., Frangi, Alejandro F., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Ayache, Nicholas, editor, Delingette, Hervé, editor, and Sermesant, Maxime, editor

Published
2009
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37. GIMIAS: An Open Source Framework for Efficient Development of Research Tools and Clinical Prototypes

Author

Larrabide, Ignacio, Omedas, Pedro, Martelli, Yves, Planes, Xavier, Nieber, Maarten, Moya, Juan A., Butakoff, Constantine, Sebastián, Rafael, Camara, Oscar, De Craene, Mathieu, Bijnens, Bart H., Frangi, Alejandro F., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Ayache, Nicholas, editor, Delingette, Hervé, editor, and Sermesant, Maxime, editor

Published
2009
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38. Cardiac Motion Estimation from Intracardiac Electrical Mapping Data: Identifying a Septal Flash in Heart Failure

Author

Camara, Oscar, Oeltze, Steffen, De Craene, Mathieu, Sebastian, Rafael, Silva, Etel, Tamborero, David, Mont, Lluis, Sitges, Marta, Bijnens, Bart H., Frangi, Alejandro F., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Ayache, Nicholas, editor, Delingette, Hervé, editor, and Sermesant, Maxime, editor

Published
2009
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39. The genetic basis of speciation mechanisms in island birds

Author

Milá Varcárcel, Borja, Zardoya San Sebastián, Rafael, Ministerio de Ciencia e Innovación (España), Recuerda Carrasco, María José, Milá Varcárcel, Borja, Zardoya San Sebastián, Rafael, Ministerio de Ciencia e Innovación (España), and Recuerda Carrasco, María José

Abstract

Understanding the process of speciation, from incipient population divergence to the formation of reproductively isolated lineages, has been one the main goals of evolutionary biology. Recent advances in high-throughput DNA sequencing technologies have allowed studying the different stages of the speciation process in non-model organisms, providing affordable access to genome-wide data and information on neutral and adaptive population divergence and the genetic basis of relevant fitness traits. In order to contribute to the understanding of the speciation process, the aims of this thesis are: (1) to detect phenotypic divergence and the regions under selection that contribute to avian adaptation to insular environments by comparing the genomic landscapes of four different passerines that have colonized oceanic islands, including the red billed chough (Pyrrhocorax pyrrhocorax) and the common chaffinch (Fringilla coelebs) of La Palma in the Atlantic Ocean, and the dark-eyed junco (Junco hyemalis/insularis) and the house finch (Haemorhous mexicanus) of Guadalupe Island in the Pacific Ocean; (2) to study the mechanisms driving the diversification of the common chaffinch as it colonized different archipelagos in the Macaronesian region, and (3) to explore the genetic basis of local adaptation of the common chaffinch in La Palma, and its role in driving evolutionary divergence. The island-mainland four-species comparison shows that even though species have evolved parallel phenotypic changes upon island colonization that are consistent with the island rule, the genomic processes underlying these changes are lineage-specific. In Macaronesia, the common chaffinch has colonized the Atlantic archipelagos sequentially, starting from the continent to Azores, then Madeira and finally the Canary Islands, diverging in phenotype and genotype, and generating a species-level radiation. Within the island of La Palma, the common chaffinch have extremely reduced dispersal, and populatio

Published
2022

45. Ventricular Tachycardia and Early Fibrillation in Patients With Brugada Syndrome and Ischemic Cardiomyopathy Show Predictable Frequency-Phase Properties on the Precordial ECG Consistent With the Respective Arrhythmogenic Substrate

Author

Calvo, David, Atienza, Felipe, Saiz, Javier, Martínez, Laura, Ávila, Pablo, Rubín, José, Herreros, Benito, Arenal, Ángel, García-Fernández, Javier, Ferrer, Ana, Sebastián, Rafael, Martínez-Camblor, Pablo, Jalife, José, and Berenfeld, Omer

Published
2015
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46. Cardiac computational modelling

Author

Universitat Politècnica de València. Departamento de Ingeniería Electrónica - Departament d'Enginyeria Electrònica, Universitat Politècnica de València. Instituto Interuniversitario de Investigación en Bioingeniería y Tecnología Orientada al Ser Humano - Institut Interuniversitari d'Investigació en Bioenginyeria i Tecnologia Orientada a l'Ésser Humà, European Commission, AGENCIA ESTATAL DE INVESTIGACION, Agencia Estatal de Investigación, Ministerio de Economía y Competitividad, Ministerio de Ciencia, Innovación y Universidades, Bragard, Jean R., Cámara, Óscar, Echebarria, Blas, Giorda, Luca Gerardo, Pueyo, Esther, Saiz Rodríguez, Francisco Javier, Sebastián, Rafael, Soudah, Eduardo, Vázquez, Mariano, Universitat Politècnica de València. Departamento de Ingeniería Electrónica - Departament d'Enginyeria Electrònica, Universitat Politècnica de València. Instituto Interuniversitario de Investigación en Bioingeniería y Tecnología Orientada al Ser Humano - Institut Interuniversitari d'Investigació en Bioenginyeria i Tecnologia Orientada a l'Ésser Humà, European Commission, AGENCIA ESTATAL DE INVESTIGACION, Agencia Estatal de Investigación, Ministerio de Economía y Competitividad, Ministerio de Ciencia, Innovación y Universidades, Bragard, Jean R., Cámara, Óscar, Echebarria, Blas, Giorda, Luca Gerardo, Pueyo, Esther, Saiz Rodríguez, Francisco Javier, Sebastián, Rafael, Soudah, Eduardo, and Vázquez, Mariano

Abstract

[EN] Cardiovascular diseases currently have a major social and economic impact, constituting one of the leading causes of mortality and morbidity. Personalized computational models of the heart are demonstrating their usefulness both to help understand the mechanisms underlying cardiac disease, and to optimize their treatment and predict the patient's response. Within this framework, the Spanish Research Network for Cardiac Computational Modelling (VHeart-SN) has been launched. The general objective of the VHeart-SN network is the development of an integrated, modular and multiscale multiphysical computational model of the heart. This general objective is addressed through the following specific objectives: a) to integrate the different numerical methods and models taking into account the specificity of patients; b) to assist in advancing knowledge of the mechanisms associated with cardiac and vascular diseases; and c) to support the application of different personalized therapies. This article presents the current state of cardiac computational modelling and different scientific works conducted by the members of the network to gain greater understanding of the characteristics and usefulness of these models., [ES] Las enfermedades cardiovasculares tienen en la actualidad un gran impacto social y económico y constituyen una de las principales causas de mortalidad y morbilidad. Los modelos computacionales personalizados del corazón están demostrando ser útiles tanto para ayudar a comprender los mecanismos subyacentes a las patologías cardiacas como para optimizar su tratamiento prediciendo la respuesta del paciente. En este contexto, se ha puesto en marcha la Red Española de Investigación en Modelización Computacional Cardiaca (V-Heart SN). El objetivo general de V-Heart SN es el desarrollo de un modelo computacional multifísico y multiescala integrado del corazón. Este objetivo general se aborda a través de los siguientes objetivos específicos: a) integrar los diferentes modelos numéricos teniendo en cuenta la especificidad de los pacientes; b) ayudar a avanzar en el conocimiento de los mecanismos asociados a las diferentes patologías cardiacas y vasculares; y c) apoyar la aplicación de terapias personalizadas. Este artículo presenta el estado actual de la modelización computacional cardiaca y los diferentes trabajos científicos desarrollados por los miembros de la red para favorecer una mayor comprensión de las características y utilidad de los modelos.

Published
2021

49. Cardiac computational modelling

Author

Bragard, Jean R., primary, Camara, Oscar, additional, Echebarria, Blas, additional, Gerardo Giorda, Luca, additional, Pueyo, Esther, additional, Saiz, Javier, additional, Sebastián, Rafael, additional, Soudah, Eduardo, additional, and Vázquez, Mariano, additional

Published
2021
Full Text
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