Impedance Reconstruction of Non-transmural Cardiac Fibrosis

In this dataset we can find geometrical setups that served as an input to carry simulations with openCARP and EIDORS. The setup consists of a Lasso with point electrodes placed on patch of tissue and embedded in a box of blood. The tissue simulates a myocardium that can be either fully healthy, fully scarred, or healthy with a 8-mm width line of scar tissue.

In addition, the voltage and local impedance maps obtained as results are included.

Two kinds of simulations were performed: reconstruction the forward injection of a 5µA current at 14.6kHz with EIDORS, and the electrical wave propagation with openCARP.

For the impedance reconstruction, a four electrode circuit was always used, meaning that two electrodes were part of the injecting pattern and a potential difference was measured between another two. The stimulating pair were sequentially changed among all pairs of neighbouring electrodes, whereas the rest of them contributed to the measurement.

The voltage maps were computed taking the recovered EGMs from the electrode positions.

Data structure

inputGeometries: 24 vtk files representing the input setup for simulations. The file names are of the form imageXX_append_cleanToGrid_LOCATION, where XX is a number among 06, 11, 52, and 55, and LOCATION refers to the position in z-axis (transmural, endo-, midmyo-, epicardio).

results:

BidomainSimulations: the extracellular potentials of each electrical propagation simulation using the Courtemanche model are saved in each of the 16 folders. All the corresponding outputs from a pseudobidomain openCARP simulation are located in each folder.

2023-04-16_image06_endo_00

2023-04-16_image06_epi_00

2023-04-16_image06_mid_00

2023-04-16_image06_transmural_00

2023-04-16_image11_endo_00

2023-04-16_image11_epi_00

2023-04-16_image11_mid_00

2023-04-16_image11_transmural_00

2023-04-16_image52_endo_00

2023-04-16_image52_epi_00

2023-04-16_image52_mid_00

2023-04-16_image52_transmural_00

2023-04-16_image55_endo_00

2023-04-16_image55_epi_00

2023-04-16_image55_mid_00

2023-04-16_image55_transmural_00

ImpedanceSimulations: mat and vtk files corresponding to either local electrical impedance reconstruction simulation. The file names are of the form imageXX_append_cleanToGrid_LOCATION, where XX is a number among 06, 11, 52, and 55, and LOCATION refers to the position in z-axis (transmural, endo-, midmyo-, epicardio).