Ventricular torsional relation to ventricular fiber arrangement
@article{Ranjbar2014VentricularTR, title={Ventricular torsional relation to ventricular fiber arrangement}, author={Saeed Ranjbar and Tohid Emami Meybodi and Mahmood Emami Meybodi}, journal={arXiv: Medical Physics}, year={2014} }
Left ventricular torsion from helically oriented myofibers is a key parameter of cardiac performance. Physicians observing heart motion on echocardiograms, during cardiac catheterization, or in the operating room, are impressed by the twisting or rotary motion of the left ventricle during systole. Conceptually, the heart has been treated as a pressure chamber. The rotary or torsional deformation has been poorly understood by basic scientists and has lacked clinical relevance. The aim of this…
One Citation
On the identification of multiple space dependent ionic parameters in cardiac electrophysiology modelling
- Mathematics
- 2018
In this paper, we consider the inverse problem of space dependent multiple ionic parameters identification in cardiac electrophysiology modelling from a set of observations. We use the monodomain…
References
SHOWING 1-10 OF 41 REFERENCES
Spatial orientation of the ventricular muscle band: physiologic contribution and surgical implications.
- MedicineThe Journal of thoracic and cardiovascular surgery
- 2001
It is hypothesized that the ventricular myocardium, both right (RV) and left (LV), exists as a continuous muscle band and this unique anatomy and spatial configuration of the myocardial muscle determine the way theventricular ejection and filling take place.
Laminar fiber architecture and three-dimensional systolic mechanics in canine ventricular myocardium.
- Biology, EngineeringAmerican journal of physiology. Heart and circulatory physiology
- 1999
End-systolic finite strains relative to end diastole of transmural markers near the apex and base of the anesthetized open-chest canine anterior left ventricular free wall were referred to three-dimensional laminar microstructural axes reconstructed from histology.
Fiber Orientation in the Canine Left Ventricle during Diastole and Systole
- BiologyCirculation research
- 1969
The wall has a well-ordered distribution of fiber angles varying from about 60° (from the circumferential direction) at the inner surface to about –60° on the outer surface, and the greatest change in angle occurs at the two surfaces (endocardial and epicardial).
Relating myocardial laminar architecture to shear strain and muscle fiber orientation.
- BiologyAmerican journal of physiology. Heart and circulatory physiology
- 2001
sheets coincide with planes of maximum systolic shear subject to the constraint that the muscle fiber axis is contained in this plane, suggesting that two populations of sheet orientation may exist.
The helical ventricular myocardial band: global, three-dimensional, functional architecture of the ventricular myocardium.
- MedicineEuropean journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery
- 2006
Regional ventricular wall thickening reflects changes in cardiac fiber and sheet structure during contraction: quantification with diffusion tensor MRI.
- BiologyAmerican journal of physiology. Heart and circulatory physiology
- 2005
It is shown for the first time that geometric changes in both sheet and fiber orientation provide a substantial mechanism for radial wall thickening independent of active components due to myofiber shortening.
Fiber architecture of the left ventricular wall: An asymptotic analysis
- Engineering
- 1989
The goal of this paper is to derive the fiber architecture of the left ventricle from first principles. The principles used are (i) mechanical equilibrium, (ii) a stress tensor that is the sum of a…
Regional localisation of left ventricular sheet structure: integration with current models of cardiac fibre, sheet and band structure.
- BiologyEuropean journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery
- 2007
Ventricular myocardial architecture as visualised in postmortem swine hearts using magnetic resonance diffusion tensor imaging.
- MedicineEuropean journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery
- 2005
Asymmetric redirection of flow through the heart
- BiologyNature
- 2000
This work shows the asymmetric redirection of streaming blood in atrial and ventricular cavities of the adult human heart, with sinuous, chirally asymmetric paths of flow through the whole, and proposes that asymmetries and curvatures of the looped heart have potential fluidic and dynamic advantages.