NDLI: Modeling dermatome selectivity of single-and multiple-current source spinal cord stimulation systems

Content Provider	IEEE Xplore Digital Library
Author	Xiaoyi Min Kent, A.R. Rosenberg, S.P. Fayram, T.A.
Copyright Year	2014
Description	Author affiliation: St. Jude Med., Sunnyvale, CA, USA (Kent, A.R.; Fayram, T.A.) \|\| St. Jude Med., Sylmar, CA, USA (Xiaoyi Min; Rosenberg, S.P.)
Abstract	A recently published computational modeling study of spinal cord stimulation (SCS) predicted that a multiple current source (MCS) system could generate a greater number of central points of stimulation in the dorsal column (DC) than a single current source (1CS) system. However, the clinical relevance of this finding has not been established. The objective of this work was to compare the dermatomal zone selectivity of MCS and 1CS systems. A finite element method (FEM) model was built with a representation of the spinal cord anatomy and a 2×8 paddle electrode array. Using a contact configuration with two aligned tripoles, the FEM model was used to solve for DC field potentials across incremental changes in current between the two cathodes, modeling the MCS and 1CS systems. The activation regions within the DC were determined by coupling the FEM output to a biophysical nerve fiber model, and coverage was mapped to dermatomal zones. Results showed marginal differences in activated dermatomal zones between 1CS and MCS systems. This indicates that a MCS system may not provide incremental therapeutic benefit as suggested in prior analysis.
Sponsorship	IEEE Eng. Med. Biol. Soc.
Starting Page	6246
Ending Page	6249
File Size	856042
Page Count	4
File Format	PDF
ISBN	9781424479290
ISSN	1557170X
DOI	10.1109/EMBC.2014.6945056
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-08-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cathodes Computational modeling Nerve fibers Biological system modeling Finite element analysis Electrical stimulation Solid modeling
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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