Orientation of conduction velocity vectors on cardiac mapping surfaces.

ABSTRACT:

Aims

Electroanatomical maps using automated conduction velocity (CV) algorithms are now being calculated using two-dimensional (2D) mapping tools. We studied the accuracy of mapping surface 2D CV, compared to the three-dimensional (3D) vectors, and the influence of mapping resolution in non-scarred animal and human heart models.

Methods and results

Two models were used: a healthy porcine Langendorff model with transmural needle electrodes and a computer stimulation model of the ventricles built from an MRI-segmented, excised human heart. Local activation times (LATs) within the 3D volume of the mesh were used to calculate true 3D CVs (direction and velocity) for different pixel resolutions ranging between 500 μm and 4 mm (3D CVs). CV was also calculated for endocardial surfa

SUBMITTER: Padilla JR 

PROVIDER: S-EPMC10062359 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature