Zobrazeno 1 - 10
of 25
pro vyhledávání: '"L. Joshua Leon"'
Publikováno v:
Cardiovascular Engineering. 4:149-153
Regardless of how it is initiated, the final stage of sudden cardiac death is ventricular fibrillation (VF), a completely disorganized electrical activity of the ventricles, characterized by multiple reentrant circuits. There is only one known therap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3cccbe9d8baeda2585384732f71e408a
https://doi.org/10.1023/b:care.0000031543.38079.62
https://doi.org/10.1023/b:care.0000031543.38079.62
Publikováno v:
Chaos: An Interdisciplinary Journal of Nonlinear Science. 12:764-778
Atrial fibrillation (AF) is a common cardiac arrhythmia, but its mechanisms are incompletely understood. The identification of phase singularities (PSs) has been used to define spiral waves involved in maintaining the arrhythmia, as well as daughter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed6cddddeea667e2c0c824b04d8240b3
https://doi.org/10.1063/1.1497505
https://doi.org/10.1063/1.1497505
Autor:
Andre Bleau, L. Joshua Leon
Publikováno v:
Computer Vision and Image Understanding. 77:317-370
In recent years, the watershed line has emerged as the primary tool of mathematical morphology for image segmentation. Several very efficient algorithms have been devised for the determination of watersheds. Nevertheless, the application of watershed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa112b5bf37f034fc4d1ec9abe6ebd39
https://doi.org/10.1006/cviu.1999.0822
https://doi.org/10.1006/cviu.1999.0822
Autor:
William L. Ditto, L. Joshua Leon, Wayne R. Giles, Robert B. Clark, Patricia A. Penkoske, Francis X. Witkowski, Mark L. Spano
Publikováno v:
Chaos: An Interdisciplinary Journal of Nonlinear Science. 8:94-102
The measurement of cardiac transmembrane potential changes with voltage sensitive dyes is in increasing use. Detection of these very small fluorescent alterations using large multiplexed arrays, such as charge coupled device (CCD) cameras at high sam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1a3544f71e40ee247bbc5c6e28c250a
https://doi.org/10.1063/1.166290
https://doi.org/10.1063/1.166290
Publikováno v:
Annals of Biomedical Engineering. 24:662-674
A strand of cardiac muscle was modeled as a small bundle of individual fibers surrounded by a large volume conductor. The bundle is a uniform assembly of small identical cylindrical fibers, arranged as a series of concentric layers, and its behavior
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::696cd87cb4495315e72608d7b70a9d85
https://doi.org/10.1007/bf02684179
https://doi.org/10.1007/bf02684179
Autor:
Francis X. Witkowski, L. Joshua Leon
Publikováno v:
Journal of Cardiovascular Electrophysiology. 6:379-390
Transmembrane Current Estimation. Introduction: A mathematical/computer model of cardiac tissue was used to study the estimation of transmembrane current (EIm) from extracellular potential recordings. Methods and Results: The simulated EIm of transme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::520b626106e284a8969d32ec8ec9cd8f
https://doi.org/10.1111/j.1540-8167.1995.tb00411.x
https://doi.org/10.1111/j.1540-8167.1995.tb00411.x
Publikováno v:
The Canadian journal of cardiology. 29(9)
Background It has been suggested that more-complex fibrillation requires higher energy shocks to terminate. Furthermore, animal studies have demonstrated that shock timing also plays a role. The objective of this study was to test these assertions in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccb825238bdf70c61939292abd7ccb65
https://pubmed.ncbi.nlm.nih.gov/23434053
https://pubmed.ncbi.nlm.nih.gov/23434053
Autor:
L. Joshua Leon, Fernand A. Roberge
Publikováno v:
Journal of Electrocardiology. 25:69-79
The hypothesis of local circuit current flow underlying propagation of activation in cardiac muscle has been extensively documented by one-dimensional and two-dimensional simulation studies. The assumptions of spatially uniform membrane capacitance a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04e41cd1fe9e1a5393fe02ee766beb7e
https://doi.org/10.1016/0022-0736(92)90065-8
https://doi.org/10.1016/0022-0736(92)90065-8
Publikováno v:
Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference. 2009
Implantable cardioverter-defibrillaters (ICDs) are well known medical device for patients who are at a risk of sudden cardiac death caused by ventricular fibrillation (VF). The relationship between VF mechanisms and successful ICD therapy to terminat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35fda09e7c733b17d42af165c382583b
https://pubmed.ncbi.nlm.nih.gov/19964845
https://pubmed.ncbi.nlm.nih.gov/19964845
Publikováno v:
Scopus-Elsevier
Simulations of cardiac bioelectric phenomena remain a significant challenge despite continual advancements in computational machinery. Spanning large temporal and spatial ranges demands millions of nodes to accurately depict geometry, and a comparabl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1240b08371a245f7c18f3d391750cc99
https://doi.org/10.1109/iembs.2009.5333738
https://doi.org/10.1109/iembs.2009.5333738