Voltage Imaging in the Study of Hippocampal Circuit Function and Plasticity
Fig. 8.1 Imaging LTP in the CA1 region. (A) A CCD image of the CA1 region in a hippocampal slice, with boundaries between layers highlighted in red. SO stratum oriens,…
RESPIRATORY IMAGING
Optical Imaging of Cardiac Action Potential
Fig. 12.1 (a) Phase-map of a re-entrant arrhythmia in a perfused sheep left atrium. A phase singularity (circle) can be observed at the center of spiral wave. (b) Corresponding activation…
Between Cardiac Electrical and Mechanical Activation Markers by Coupling Bidomain and Deformation Models
the material coordinates of the undeformed cardiac domain , by the spatial coordinates of the deformed cardiac domain at time t, by the deformation gradient. The cardiac tissue is modeled…
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….
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…
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…
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…
