Publications

S. Wall, J. Guccione, M. Ratcliffe, and J. Sundnes. Electromechanical feedback in the presence of reduced conduction alters electrical activity in an infarct injured left ventricle – a finite model study, Submitted to American Journal of Physiology - Heart and Circulatory Physiology, 2011.

S. Wall, J. Sundnes, N. Trayanova, R. C. P. Kerkhoffs, and V. Prot. Modeling coupled electromechanics in the cardiovascular system, SIAM CSE Reno, Nevada, USA, 2011.

M. Cannataro, R. W. dos Santos, and J. Sundnes. Biomedical and bioinformatics challenges to computer science, In: Proceedings of the International Conference on Computational Science, ICCS, ed. by P.M.A. Sloot and G.D. van Albada and J. Dongarra, Elsevier. Procedia Computer Science, 2010.

B. L. de Oliveira, J. Sundnes, and R. W. dos Santos. The development of a new computational model for the electromechanics of the human myocyte, In: Proceedings of the 32nd International Conference of the IEEE EMBS, ed. by Nigel Lovell et al, IEEE, 2010.

M. Hanslien, N. Holden, and J. Sundnes. A note on discontinuous rate functions for the gate variables in mathematical models of cardiac cells, In: Proceedings of the International Conference on Computational Science, ICCS, ed. by P.M.A. Sloot and G.D. van Albada and J. Dongarra, pp. 945-950, Elsevier. Procedia computer science, 2010.

R. S. Campos, R. M. Amorim, C. M. Costa, B. L. de Oliveira, C. Barbosa, J. Sundnes, and R. W. dos Santos. Aproaching Cardiac Modeling Challenges to Computer Science with CellMl-based Web Tools, Future Generation Computer Systems 26(3):462-470, 2009.

M. Hanslien, R. Artebrant, J. Sundnes, and A. Tveito. An unconditionally stable second order method for the Luo-Rudy 1 model used in simulations of defibrillation, International Journal of Numerical Analysis and Modeling 6(4):627-641, 2009.

S. Linge, J. Sundnes, M. Hanslien, G. T. Lines, and A. Tveito. Numerical solution of the bidomain equations, Philosophical Transactions of the Royal Society A 367(1895):1931-1951, 2009.

B. F. Nielsen, X. Cai, J. Sundnes, and A. Tveito. Towards a computational method for imaging the extracellular potassium concentration during regional ischemia, Mathematical Biosciences 220(2):118-130, 2009.

T. S. Ruud, B. F. Nielsen, O. M. Lysaker, and J. Sundnes. A Computationally Efficient Method for Determining the Size and Location of Myocardial Ischemia, IEEE Transactions on Biomedical Engineering 56(2):263-272, 2009.

J. Sundnes, R. Artebrant, O. Skavhaug, and A. Tveito. A second order algorithm for solving dynamic cell membrane equations, IEEE Transactions on Biomedical Engineering 56(10):2546-2548, 2009.

M. Cannataro, R. W. dos Santos, and J. Sundnes. Bioinformatics’ Challenges to Computer Science: Bioinformatics Tools and Biomedical Modeling, In: Proceedings of the International Conference on Computational Science, ICCS, ed. by G. Allen, J. Nabrzyski, E. Seidel, G. D. van Albada, J. Dongarra, and P. M. A. Sloot, Springer. Lecture notes in computational science, 2009.

H. Osnes, S. R. Clark, and J. Sundnes. Uncertainty analysis of the mechanics of the heart, In: Proceedings of the Twenty Second Nordic Seminar on Computational Mechanics, ed. by Damkilde, L. and Andersen, L. and Kristensen, A.S. and Lund, E. , chap. 245-248, Aalborg University. Department of Civil Engineering. DCE Technical Memorandum, 2009.

B. M. Rocha, B. Lino, R. W. dos Santos, E. T. Magalhães, L. P. S. Barra, and J. Sundnes. A two dimensional model of coupled electromechanics in cardiac tissue, In: Proceedings of the World Congress on Medical Physics and Biomedical Engineering, ed. by W. Schlegel and O. Dössel, Springer, 2009.

H. P. Langtangen and J. Sundnes. Scientific Computing: Why - How - What - What's Next, In: Simula Research Laboratory - by thinking constantly about it, ed. by Aslak Tveito and Are Magnus Bruaset and Olav Lysne. Springer, chap. 18, pp. 237-248, 2009.

G. T. Lines and J. Sundnes. Computer Simulations of the Heart, In: Simula Research Laboratory - by thinking constantly about it, ed. by Tveito, Aslak and Bruaset, Are Magnus and Lysne, Olav . Springer, Heidelberg, chap. 20, pp. 259-276, 2009.

J. Sundnes. Multiscale models of physiological systems, Guest lecture at the course "Bioinformatics for molecular biology", University of Oslo, 2009.

J. Sundnes, S. Wall, and H. Osnes. Computer modeling of cardiac electro-mechanics - Models and numerical methods, Talk at Cardiac Modeling seminar, Simula Research Laboratory, 2009.

J. Sundnes, S. Wall, and H. Osnes. Simulation of strongly coupled electro-mechanics in an infarcted left ventricle, Invited talk at the workshop Bidomain 2009, University of Graz, 2009.

S. Wall, J. Sundnes, M. Ratcliffe, and J. Guccione. Electromechanical Modeling of the Infarct Injured Failing Ovine Heart , Center for Heart Failure Research 7th Annual Symposium, 2009.

M. Hanslien, J. Sundnes, and N. Holden. A note on discontinues rate functions for the gate variables in mathematical models of cardiac cells, Submitted to journal, 2008.

S. Linge, G. T. Lines, J. Sundnes, and A. Tveito. On the frequency of automaticity during ischemia in simulations based on stochastic perturbations of the Luo-Rudy 1 model, Computers in Biology and Medicine 38( ):1218-1227, 2008.

J. Sundnes. Computational challenges in mathematical models of the heart, Talk at Norwegian University of Life Sciences, January 30th, 2008.

M. Hanslien, J. Sundnes, and A. Tveito. An unconditionally stable numerical method for the Luo-Rudy 1 model used in simulations of defibrillation, Mathematical Biosciences 208(2):375--392, 2007.

M. MacLachlan, J. Sundnes, and R. J. Spiteri. A comparison of non-standard solvers for ODEs describing cellular reactions in the heart, Computer Methods in Biomechanics and Biomedical Engineering 10(5):317--326, 2007.

M. MacLachlan, J. Sundnes, O. Skavhaug, O. M. Lysaker, B. F. Nielsen, and A. Tveito. A linear system of partial differential equations modeling the resting potential of a heart with regional ischemia, Mathematical Biosciences 210(1):238--252, 2007.

M. S. Alnæs, Kent-A. Mardal, and J. Sundnes. Application of symbolic finite element tools to nonlinear hyperelasticity, In: Fourth national conference on Computational Mechanics (MekIT'07), ed. by B. Skallerud and H.I. Andersson, pp. 87-101, NO-7005 Trondheim, Tapir Academic Press, 2007.

M. S. Alnæs, Kent-A. Mardal, and J. Sundnes. Application of symbolic finite element tools to nonlinear hyperelasticity, Talk at MekIT'07: Fourth National Conference on Computational Mechanics, 2007.

J. Sundnes. Using mathematical models to test physiological hypotheses, Invited talk at the annual meeting of the Scandinavian Physiological Society, 2007.

J. Sundnes. Computational techniques for heart muscle mechanics, Minisymposium talk at ICIAM 07, Zurich, 2007.

J. Sundnes. Software components for biomedical flows, National seminar on medical technology, NFA (Norsk forening for automatisering), 2007.

J. Sundnes, M. S. Alnæs, and Kent-A. Mardal. A finite element model of cardiac electrophysiology and mechanics, VII International conference on computational plasticity, 2007.

J. Sundnes, G. T. Lines, X. Cai, B. F. Nielsen, Kent-A. Mardal, and A. Tveito. Computing the electrical activity in the heart, Springer-Verlag, 2006.

J. Sundnes, B. F. Nielsen, Kent-A. Mardal, X. Cai, G. T. Lines, and A. Tveito. On the computational complexity of the bidomain and the monodomain models of electrophysiology, Annals of biomedical engineering 34(7):1088-1097, 2006.

B. F. Nielsen, O. M. Lysaker, C. Tarrou, J. Sundnes, X. Cai, and Kent-A. Mardal. On the use of the bidomain equations for computing the transmembrane potential throughout the heart wall: An inverse problem, In: Computers in Cardiology 2006, ed. by A. Murray, pp. 797-800, Computers in Cardiology, 2006.

M. Hanslien, J. Sundnes, and A. Tveito. Simulations of reentrant arrhythmias in the heart, and defibrillation as a treatment, Presented at NADA, KTH, Sweeden, 2006.

M. Hanslien, J. Sundnes, G. T. Lines, and A. Tveito. Simulating electrical activity in the heart, Presented at St Jude Medical, Stockholm, Sweeden, 2006.

H. P. Langtangen and J. Sundnes. Introduction to heart muscle mechanics-basic concepts of muscle contraction and soft tissue mechanics., Lecture at Svalbard summer school, 2006.

B. F. Nielsen, O. M. Lysaker, X. Cai, Kent-A. Mardal, C. Tarrou, M. MacLachlan, J. Sundnes, G. T. Lines, and A. Tveito. Computational issues in heart modeling, Presented at the Johann Radon Institute for Computational and Applied Mathematics, Linz, Austria, 2006.

B. F. Nielsen, O. M. Lysaker, C. Tarrou, J. Sundnes, X. Cai, and Kent-A. Mardal. On the use of the bidomain equations for computing the transmembrane potential throughout the heart wall: An inverse problem, Presented at the Computers in Cardiology conference in Valencia, Spain, 2006.

S. Linge, G. T. Lines, and J. Sundnes. Solving the heart mechanics equations with Newton and quasi Newton methods - a comparison, Computer Methods in Biomechanics and Biomedical Engineering 8(1):1--8, 2005.

M. C. MacLachlan, J. Sundnes, and G. T. Lines. Simulation of ST Segment Changes During Subendocardial Ischemia Using a Realistic 3-D Cardiac Geometry, IEEE Transactions on Biomedical Engineering 52(5):799--807, 2005.

J. Sundnes, G. T. Lines, and A. Tveito. An operator splitting method for solving the bidomain equations coupled to a volume conductor model for the torso, Mathematical biosciences 194(2):233--248, 2005.

T. Thorvaldsen, H. Osnes, and J. Sundnes. A Mixed Finite Element Formulation for a Nonlinear, Transversely Isotropic Material Model for the Cardiac Tissue, Computer Methods in Biomechanics and Biomedical Engineering 8(6):369-379, 2005.

M. Hanslien, J. Sundnes, and G. T. Lines. Numerical simulations of cardiac arrhythmias and defibrillation, In: MekIT'05 - Third national conference on Computational Mechanics, Trondheim, Norway May 11-12, ed. by Bjørn Skallerud and Helge I. Andersson, pp. 135-144, Trondheim, Tapir Academic Press, 2005.

T. Thorvaldsen, J. Sundnes, and H. Osnes. A Mixed Formulation for Modeling the Mechanical Bahavior of the Heart, In: MekIt05 - Third national conference om Computational Mechanics, Trondheim May 11-12, ed. by Bjørn Skallerud and Helge I. Andersson, pp. 327--341, Tapir Academic Press, 2005.

T. Thorvaldsen, J. Sundnes, and H. Osnes. Non-Linear Elasticity with Applications to Heart Mechanics, Simula Research Laboratory, Research Report(2005-16), 2005.

O. M. Lysaker, B. F. Nielsen, A. Tveito, G. T. Lines, J. Sundnes, and C. Tarrou. Kan man simulere et hjerteslag?, LAMIS - SOMMERKURS "Matematikk – med røtter og vinger ", Asker, 2005.

J. Sundnes. Computing the electrical activity in the heart, Presented at the Department of Mathematics, University of Oslo, 2005.

J. Sundnes, M. Hanslien, and A. Tveito. An unconditionally stable numerical method for the Luo-Rudy I model used in defibrillation, Presented at Tulane University, New Orleans, 2005.