in vivo mapping of current density distribution in brain tissues during deep brain stimulation (dbs)
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2017
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Abstract
New methods for in vivo mapping of brain responses during deep brain stimulation (DBS) are indispensable to secure clinical applications. Assessment of current density distribution, induced by internally injected currents, may provide an alternative method for understanding the therapeutic effects of electrical stimulation. The current flow and pathway are affected by internal conductivity, and can be imaged using magnetic resonance-based conductivity imaging methods. Magnetic resonance electrical impedance tomography (MREIT) is an imaging method that can enable highly resolved mapping of electromagnetic tissue properties such as current density and conductivity of living tissues. In the current study, we experimentally imaged current density distribution of in vivo canine brains by applying MREIT to electrical stimulation. The current density maps of three canine brains were calculated from the measured magnetic flux density data. The absolute current density values of brain tissues, including gray matter, white matter, and cerebrospinal fluid were compared to assess the active regions during DBS. The resulting current density in different tissue types may provide useful information about current pathways and volume activation for adjusting surgical planning and understanding the therapeutic effects of DBS.
| Reference Key |
sajib2017aipin
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|---|---|
| Authors | ;Saurav Z. K. Sajib;Tong In Oh;Hyung Joong Kim;Oh In Kwon;Eung Je Woo |
| Journal | journal of hydrology: x |
| Year | 2017 |
| DOI |
10.1063/1.4973818
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| URL | |
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