Effects Of Time Varying Magnetic Fields In The Frequency Range 1 Khz To 100 Khz Upon The Human Body
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Effects Of Time Varying Magnetic Fields In The Frequency Range 1 Khz To 100 Khz Upon The Human Body
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Author : Julia Bohnert
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-05-12
Effects Of Time Varying Magnetic Fields In The Frequency Range 1 Khz To 100 Khz Upon The Human Body written by Julia Bohnert and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-12 with Technology & Engineering categories.
In this work, the physiological effects of time-varying magnetic fields up to 100 kHz have been investigated, namely magnetic stimulation and body warming. Simulation studies were based on numerical calculations on sophisticated cell and body models. In addition, magnetic stimulation thresholds have been determined experimentally.The project was carried out within the scope of the development of Magnetic Particle Imaging, a new imaging technology for medical diagnostics.
5th European Conference Of The International Federation For Medical And Biological Engineering 14 18 September 2011 Budapest Hungary
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Author : Ákos Jobbágy
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-02-02
5th European Conference Of The International Federation For Medical And Biological Engineering 14 18 September 2011 Budapest Hungary written by Ákos Jobbágy and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-02-02 with Technology & Engineering categories.
This volume presents the 5th European Conference of the International Federation for Medical and Biological Engineering (EMBEC), held in Budapest, 14-18 September, 2011. The scientific discussion on the conference and in this conference proceedings include the following issues: - Signal & Image Processing - ICT - Clinical Engineering and Applications - Biomechanics and Fluid Biomechanics - Biomaterials and Tissue Repair - Innovations and Nanotechnology - Modeling and Simulation - Education and Professional
A Multiscale In Silico Study To Characterize The Atrial Electrical Activity Of Patients With Atrial Fibrillation A Translational Study To Guide Ablation Therapy
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Author : Sánchez Arciniegas, Jorge Patricio
language : en
Publisher: KIT Scientific Publishing
Release Date : 2022-05-30
A Multiscale In Silico Study To Characterize The Atrial Electrical Activity Of Patients With Atrial Fibrillation A Translational Study To Guide Ablation Therapy written by Sánchez Arciniegas, Jorge Patricio and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-05-30 with Medical categories.
The atrial substrate undergoes electrical and structural remodeling during atrial fibrillation. Detailed multiscale models were used to study the effect of structural remodeling induced at the cellular and tissue levels. Simulated electrograms were used to train a machine-learning algorithm to characterize the substrate. Also, wave propagation direction was tracked from unannotated electrograms. In conclusion, in silico experiments provide insight into electrograms' information of the substrate.
Multiscale Modeling Of Cardiac Electrophysiology Adaptation To Atrial And Ventricular Rhythm Disorders And Pharmacological Treatment
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Author : Mathias Wilhelms
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-05-22
Multiscale Modeling Of Cardiac Electrophysiology Adaptation To Atrial And Ventricular Rhythm Disorders And Pharmacological Treatment written by Mathias Wilhelms and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-22 with Technology & Engineering categories.
Multiscale modeling of cardiac electrophysiology helps to better understand the underlying mechanisms of atrial fibrillation, acute cardiac ischemia and pharmacological treatment. For this purpose, measurement data reflecting these conditions have to be integrated into models of cardiac electrophysiology. Several methods for this model adaptation are introduced in this thesis. The resulting effects are investigated in multiscale simulations ranging from the ion channel up to the body surface.AbstractEnglisch = Multiscale modeling of cardiac electrophysiology helps to better understand the underlying mechanisms of atrial fibrillation, acute cardiac ischemia and pharmacological treatment. For this purpose, measurement data reflecting these conditions have to be integrated into models of cardiac electrophysiology. Several methods for this model adaptation are introduced in this thesis. The resulting effects are investigated in multiscale simulations ranging from the ion channel up to the body surface.
Modeling Human Atrial Patho Electrophysiology From Ion Channels To Ecg Substrates Pharmacology Vulnerability And P Waves
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Author : Loewe, Axel
language : en
Publisher: KIT Scientific Publishing
Release Date : 2016-08-03
Modeling Human Atrial Patho Electrophysiology From Ion Channels To Ecg Substrates Pharmacology Vulnerability And P Waves written by Loewe, Axel and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-03 with Technology (General) categories.
Half of the patients suffering from atrial fibrillation (AF) cannot be treated adequately, today. This book presents multi-scale computational methods to advance our understanding of patho-mechanisms, to improve the diagnosis of patients harboring an arrhythmogenic substrate, and to tailor therapy. The modeling pipeline ranges from ion channels on the subcellular level up to the ECG on the body surface. The tailored therapeutic approaches carry the potential to reduce the burden of AF.
Ecg Based Analysis Of The Ventricular Repolarisation In The Human Heart
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Author : Baas, Tobias
language : en
Publisher: KIT Scientific Publishing
Release Date : 2012-08-06
Ecg Based Analysis Of The Ventricular Repolarisation In The Human Heart written by Baas, Tobias and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08-06 with Technology & Engineering categories.
ECG recordings provide diagnostic relevant information on the de- and repolarisation sequences of the heart. A modification of the repolarisation sequence is assumed to cause Torsades de Pointes. Especially drug induced effects on the repolarisation processes are in focus, since some non-cardiac drugs have been associated with sudden cardiac death in the 1990s.The analysis of the ventricular repolarisation using a set of parameters depicting the morphology of the T-wave is introduced in this work. Therefore, new methods of fully automatic patient-specific QRS detection, beat classification and precise T-wave delineation are presented. Using these methods, medical studies are investigated regarding the modification of the T-wave by different compounds. Also the impact of the heart rate on the morphology of the T-wave is part of this research.The reliable identification of ventricular ectopic beats allows an analysis of the influence of these beats on subsequent heart beats. It turned out that the morphology of subsequent heart beats can significantly be changed. This might give new information on the proarrythmical risk of ventricular ectopic beats.
Analysis Of Atrial Electrograms
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Author : Christopher Schilling
language : en
Publisher: KIT Scientific Publishing
Release Date : 2012
Analysis Of Atrial Electrograms written by Christopher Schilling and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Atrial fibrillation categories.
This work provides methods to measure and analyze features of atrial electrograms - especially complex fractionated atrial electrograms (CFAEs) - mathematically. Automated classification of CFAEs into clinical meaningful classes is applied and the newly gained electrogram information is visualized on patient specific 3D models of the atria. Clinical applications of the presented methods showed that quantitative measures of CFAEs reveal beneficial information about the underlying arrhythmia.
Formation Of Intracardiac Electrograms Under Physiological And Pathological Conditions
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Author : Keller, Matthias
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-09-09
Formation Of Intracardiac Electrograms Under Physiological And Pathological Conditions written by Keller, Matthias and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-09 with Technology & Engineering categories.
This work presents methods to advance electrophysiological simulations of intracardiac electrograms (IEGM). An experimental setup is introduced, which combines electrical measurements of extracellular potentials with a method for optical acquisition of the transmembrane voltage in-vitro. Thereby, intracardiac electrograms can be recorded under defined conditions. Using experimental and clinical signals, detailed simulations of IEGMs are parametrized, which can support clinical diagnosis.
4th European Conference Of The International Federation For Medical And Biological Engineering 23 27 November 2008 Antwerp Belgium
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Author : Jos van der Sloten
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-02-04
4th European Conference Of The International Federation For Medical And Biological Engineering 23 27 November 2008 Antwerp Belgium written by Jos van der Sloten and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-02-04 with Technology & Engineering categories.
The 4th European Congress of the International Federation for Medical and Biological Federation was held in Antwerp, November 2008. The scientific discussion on the conference and in this conference proceedings include the following issues: Signal & Image Processing ICT Clinical Engineering and Applications Biomechanics and Fluid Biomechanics Biomaterials and Tissue Repair Innovations and Nanotechnology Modeling and Simulation Education and Professional
Ecg Imaging Of Ventricular Activity In Clinical Applications
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Author : Schulze, Walther H. W.
language : en
Publisher: KIT Scientific Publishing
Release Date : 2015-08-12
Ecg Imaging Of Ventricular Activity In Clinical Applications written by Schulze, Walther H. W. and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-08-12 with Technology (General) categories.
ECG imaging was performed in humans to reconstruct ventricular activation patterns and localize their excitation origins. The precision of the non-invasive reconstructions was evaluated against invasive measurements and found to be in line with the state-of-the-art literature. Statistics were produced for various excitation origins and reveal the beat-to-beat robustness of the imaging method.