Comput Math Methods Med - An image-based model of the whole human heart with detailed anatomical structure and fiber orientation.

Tópicos

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Resumo

Many heart anatomy models have been developed to study the electrophysiological properties of the human heart. However, none of them includes the geometry of the whole human heart. In this study, an anatomically detailed mathematical model of the human heart was firstly reconstructed from the computed tomography images. In the reconstructed model, the atria consisted of atrial muscles, sinoatrial node, crista terminalis, pectinate muscles, Bachmann's bundle, intercaval bundles, and limbus of the fossa ovalis. The atrioventricular junction included the atrioventricular node and atrioventricular ring, and the ventricles had ventricular muscles, His bundle, bundle branches, and Purkinje network. The epicardial and endocardial myofiber orientations of the ventricles and one layer of atrial myofiber orientation were then measured. They were calculated using linear interpolation technique and minimum distance algorithm, respectively. To the best of our knowledge, this is the first anatomically-detailed human heart model with corresponding experimentally measured fibers orientation. In addition, the whole heart excitation propagation was simulated using a monodomain model. The simulated normal activation sequence agreed well with the published experimental findings.

Resumo Limpo

mani heart anatomi model develop studi electrophysiolog properti human heart howev none includ geometri whole human heart studi anatom detail mathemat model human heart first reconstruct comput tomographi imag reconstruct model atria consist atrial muscl sinoatri node crista terminali pectin muscl bachmann bundl intercav bundl limbus fossa ovali atrioventricular junction includ atrioventricular node atrioventricular ring ventricl ventricular muscl bundl bundl branch purkinj network epicardi endocardi myofib orient ventricl one layer atrial myofib orient measur calcul use linear interpol techniqu minimum distanc algorithm respect best knowledg first anatomicallydetail human heart model correspond experiment measur fiber orient addit whole heart excit propag simul use monodomain model simul normal activ sequenc agre well publish experiment find

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