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Special Section Technical Briefs

Novel Multiscale Frequency Approach to Identify the Pivot Point of the Rotor1

[+] Author and Article Information
Shivaram Poigai Arunachalam, Elizabeth M. Annoni, Elena G. Tolkacheva

Department of Biomedical Engineering,
University of Minnesota,
Minneapolis, MN 55455

Siva K. Mulpuru, Paul A. Friedman

Division of Cardiovascular Diseases,
Mayo Clinic,
Rochester, MN 55902

DOI: 10.1115/1.4033148Manuscript received March 1, 2016; final manuscript received March 16, 2016; published online May 12, 2016. Editor: William Durfee.

J. Med. Devices 10(2), 020948 (May 12, 2016) (2 pages) Paper No: MED-16-1069; doi: 10.1115/1.4033148 History: Received March 01, 2016; Revised March 16, 2016

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Copyright © 2016 by ASME
Topics: Rotors
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References

Ganesan, A. N. , Kuklik, P. , Lau, D. H. , Brooks, A. G. , Baumert, M. , Lim, W. W. , Thanigaimani, S. , Nayyar, S. , Mahajan, R. , Kalman, J. M. , Roberts-Thomson, K. C. , and Sanders, P. , 2013, “ Bipolar Electrogram Shannon Entropy at Sites of Rotational Activation Implications for Ablation of Atrial Fibrillation,” Circ. Arrhythmia Electrophysiol., 6(1), pp. 48–57. [CrossRef]
Pandit, S. V. , and Jalife, J. , 2013, “ Rotors and the Dynamics of Cardiac Fibrillation,” Circ. Res., 112(5), pp. 849–862. [CrossRef] [PubMed]
Narayan, S. M. , and Jalife, J. , 2014, “ CrossTalk Proposal: Rotors Have Been Demonstrated to Drive Human Atrial Fibrillation,” J. Physiol., 592(15), pp. 3163–3166. [CrossRef] [PubMed]
Arunachalam, S. P. , Mulpuru, S. K. , Friedman, P. A. , and Tolkacheva, E. G. , 2015, “ Feasibility of Visualizing Higher Regions of Shannon Entropy in Atrial Fibrillation Patients,” 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Milan, Italy, Aug. 25–29, pp. 4499–4502.
Knutsson, H. , Westin, C.-F. , and Granlund, G. , 1994, “ Local Multiscale Frequency and Bandwidth Estimation,” IEEE International Conference on Image Processing (ICIP-94), Austin, TX, Nov. 13–16, Vol. 1, pp. 36–40.

Figures

Grahic Jump Location
Fig. 1

Representative example of a single rotor in isolated rabbit heart from optical mapping experiments. The pivot point of the rotor is indicated by the arrow.

Grahic Jump Location
Fig. 2

Two-dimensional DF map showing uniform DF throughout the rotor zone. Pivot point is indicated by the arrow.

Grahic Jump Location
Fig. 3

Two-dimensional i-MSF map showing the correct identification of the rotor pivot point (see arrow)

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