Modified Mass Spring System For Physically Based Deformation Modeling
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Modified Mass Spring System For Physically Based Deformation Modeling
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Author : Oussama Jarrousse
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-09
Modified Mass Spring System For Physically Based Deformation Modeling written by Oussama Jarrousse 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 with Technology & Engineering categories.
Mass-spring systems are considered the simplest and most intuitive of all deformable models. They are computationally efficient, and can handle large deformations with ease. But they suffer several intrinsic limitations. In this book a modified mass-spring system for physically based deformation modeling that addresses the limitations and solves them elegantly is presented. Several implementations in modeling breast mechanics, heart mechanics and for elastic images registration are presented.
Personalized Multi Scale Modeling Of The Atria Heterogeneities Fiber Architecture Hemodialysis And Ablation Therapy
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Author : Martin Wolfgang Krüger
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-05-22
Personalized Multi Scale Modeling Of The Atria Heterogeneities Fiber Architecture Hemodialysis And Ablation Therapy written by Martin Wolfgang Krüger 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.
This book targets three fields of computational multi-scale cardiac modeling. First, advanced models of the cellular atrial electrophysiology and fiber orientation are introduced. Second, novel methods to create patient-specific models of the atria are described. Third, applications of personalized models in basic research and clinical practice are presented. The results mark an important step towards the patient-specific model-based atrial fibrillation diagnosis, understanding and treatment.
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.
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.
Multiscale Cohort Modeling Of Atrial Electrophysiology Risk Stratification For Atrial Fibrillation Through Machine Learning On Electrocardiograms
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Author : Nagel, Claudia
language : en
Publisher: KIT Scientific Publishing
Release Date : 2023-04-24
Multiscale Cohort Modeling Of Atrial Electrophysiology Risk Stratification For Atrial Fibrillation Through Machine Learning On Electrocardiograms written by Nagel, Claudia 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 2023-04-24 with categories.
An early detection and diagnosis of atrial fibrillation sets the course for timely intervention to prevent potentially occurring comorbidities. Electrocardiogram data resulting from electrophysiological cohort modeling and simulation can be a valuable data resource for improving automated atrial fibrillation risk stratification with machine learning techniques and thus, reduces the risk of stroke in affected patients.
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.
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.
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.
Development And Evaluation Of Coded Aperture Reconstruction Methods For Intraoperative Gamma Cameras
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Author : Meißner, Tobias
language : en
Publisher: KIT Scientific Publishing
Release Date : 2025-01-20
Development And Evaluation Of Coded Aperture Reconstruction Methods For Intraoperative Gamma Cameras written by Meißner, 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 2025-01-20 with categories.
Intraoperative Gamma Cameras are becoming increasingly common for radio-guided surgery. Coded Aperture Imaging has been proposed as a collimation technique, because it offers a better trade-off between sensitivity and spatial resolution, but requires image reconstruction. Therefore, a Convolutional Encoder-Decoder Network was developed and quantitatively compared with analytical methods. Furthermore, 3D-localization of point-like sources was investigated.