Adjusting electrode potentials to compensate thermal/tissue effects in deep brain stimulation via finite element electromagnetic analysis

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Abstract

The proposed method is intended to adjust the electrode potentials used in deep brain stimulation (DBS) with the consideration of both tissue transform and thermal effects caused by stimulation. During a typical DBS process, it is essential, for an effective treatment, to control the stimulation strength and region with varied applied electrode potentials. Some previous studies have been devoted for numerical simulations to find suitable electrode voltage levels for pre-desired stimulated strength and region. These studies consider only one of the two complexity factors due to the intrusion of the DBS lead: 1) a layer of extracellular fluid and giant cell often formed around the DBS leads, called the peri-electrode space and 2) thermal effects. These two factors should both be considered in finite element electromagnetic analysis (FEA), which provides the means to adjust electrode potential for the originally-desired DBS region-called the volume of tissue activated (VTA). Simulation results show that there should be a limiting stimulation voltage to meet the temperature constraint.

Original languageEnglish
Article number5467380
Pages (from-to)2397-2400
Number of pages4
JournalIEEE Transactions on Magnetics
Volume46
Issue number6
DOIs
StatePublished - 1 Jun 2010

Keywords

  • Deep brain stimulation (DBS)
  • Finite element analysis (FEA)
  • Peri-electrode space
  • Thermal effect
  • Volume of tissue activated (VTA)

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