Browsing Titles index "Computers in biology and medicine"
Now showing items 1-7 of 7
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Fitting local repolarization parameters in cardiac reaction-diffusion models in the presence of electrotonic coupling
(Elsevier, 2017)Background: Repolarization gradients contribute to arrhythmogenicity. In reaction–diffusion models of cardiac tissue, heterogeneities in action potential duration (APD) can be created by locally modifying an intrinsic membrane kinetics parameter. ... -
Modeling left and right atrial contributions to the ECG : a dipole-current source approach
(Elsevier, 2015)This paper presents the mathematical formulation, the numerical validation and several illustrations of a forward-modeling approach based on dipole-current sources to compute the contribution of a part of the heart to the electrocardiogram (ECG). ... -
Multiparameter optimization of nonuniform passive diffusion properties for creating coarse-grained equivalent models of cardiac propagation
(Elsevier, 2021-09-10)The arrhythmogenic role of discrete cardiac propagation may be assessed by comparing discrete (fine-grained) and equivalent continuous (coarse-grained) models. We aim to develop an optimization algorithm for estimating the smooth conductivity field ... -
Phase singularity detection through phase map interpolation : theory, advantages and limitations
(Elsevier, 2018-07-24)Background During a cardiac arrhythmia, reentrant waves rotate around critical points called phase singularities (PS). PS detection is relevant to the quantitative description of the dynamics and to the identification of potential targets for ablation. ... -
Statistical model based 3D shape prediction of postoperative trunks for non-invasive scoliosis surgery planning
(Elsevier, 2014-05-01)One of the major concerns of scoliosis patients undergoing surgical treatment is the aesthetic aspect of the surgery outcome. It would be useful to predict the postoperative appearance of the patient trunk in the course of a surgery planning process ... -
Surrogate optimization of a lattice foot orthotic
(Elsevier, 2022-11-30)Background: Additive manufacturing enables to print patient-specific Foot Orthotics (FOs). In FOs featuring lattice structures, the variation of the cell’s dimensions provides a locally variable stiffness to meet the therapeutic needs of each patient. ... -
Visualization of interpolated atrial fiber orientation using evenly-spaced streamlines
(Elsevier, 2019-07-08)Background Mathematical models of electrical propagation in the atria necessitate the specification of fiber orientation, often visualized over the epicardial and endocardial surfaces. Clear graphical representation of an orientation field over a ...