in Modeling Cardiac Optical Mapping Measurements
) recorded when the tissue is at rest. Fluxes captured during an AP are denoted by F. The signal due only to the AP itself is . We shall rather…
to Choose Myofiber Orientation in a Biventricular Finite Element Model?
, predominantly in transmural direction, resulted in a 91 % increase of LV and 20 % increase of RV stroke work. These findings indicate the importance for a more thorough effort to…
State Estimation for Electrophysiology Models with Front Level-Set Data Using Topological Gradient Derivations
, and the primary unknowns are the extracellular potential and the transmembrane potential . Hence, the intracellular potential reads . For all c_{\text {th}}\}, \end{aligned}$$” src=”/wp-content/uploads/2016/09/A339585_1_En_46_Chapter_Equ4.gif”> (4)up to some measurement noise….
of the Electrocardiography Inverse Solution to the Torso Conductivity Uncertainties
uncertainties in the fat conductivity does not alter the inverse solution, whereas adding uncertainties in the lung conductivity affects the reconstructed heart potential by almost . 1 Introduction The ECGI procedure…
Edge Map (PEM) for 3D Ultrasound Image Registration and Multi-atlas Left Ventricle Segmentation
Fig. 1. (a) 3D cardiac US image, (b) phase congruency [13], and (c) PEM which captures missing structures (orange arrows) and provides smoother edge response (green arrows). In (d) SDF training…
Human Left Ventricular Modelling with Fluid-Structure Interaction
; frame rate: 25 per cardiac cycle. Phase contrast imaging was also performed to measure the flow rate across the aortic valve. Ventricular wall boundaries were extracted at early diastole…
of Atrial Electrophysiology Models from Decapolar Catheter Measurements
error in estimating model parameters. KeywordsElectrogramsComputational models personalizationMulti-electrode catheters 1 Introduction Computational models represent a novel framework for studying pathologies of the human atria and offer a pathway for selecting…
Model Reduction for Fast, High Fidelity Atrial Electrophysiology Computations
Fig. 1. Dimensional reduction of the AP manifold generated by the CRN model. The first six PCA modes are plotted. The topic of reduced-order modeling for cardiac electrophysiology has been…
Role of Endocardial Trabeculations in Low-Energy Defibrillation
) [6] using approximately 1 / 10th the energy [3] of current shock protocols when low-energy pulses are used. The exact nature of the fine-scale structural heterogeneity driving virtual-electrode formation during defibrillation…
Numerical Schemes for Computing Cardiac Electrical Activation over Realistic Purkinje Networks: Method and Verification
-error is similar in both implementations and decreases linearly with the spatial step size. Finally, we test the performance of the implementations with networks of varying complexity, where the hybrid…
