Conductivity of living intracranial tissues

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Published under licence by IOP Publishing Ltd
, , Citation Juha Latikka et al 2001 Phys. Med. Biol. 46 1611 DOI 10.1088/0031-9155/46/6/302

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1 Ragnar Granit Institute, Tampere University of Technology, PO Box 692, FIN-33101, Tampere, Finland

2 Department of Neurosurgery, Tampere University Hospital, PO Box 2000, FIN-33521, Tampere, Finland

Dates

  1. Received 12 September 2000

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0031-9155/46/6/1611

Abstract

Resistivity values were measured from living human brain tissue in nine patients. A monopolar needle electrode was used with a measurement frequency of 50 kHz. Mean values were 3.51 Ω m for grey matter and 3.91 Ω m for white matter. Cerebrospiral fluid had a mean value of 0.80 Ω m. Values for tumour tissues were dependent on the type of tumour and ranged from 2.30 to 9.70 Ω m.

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