Comparison of electrical conductivities of various brain phantom gels: Developing a 'Brain Gel Model'
Mater Sci Eng C Mater Biol Appl
; 32(8): 2664-2667, 2012 Dec 01.
Article
em En
| MEDLINE
| ID: mdl-23139442
ABSTRACT
The use of conducting gels to mimic brain and other tissues is of increasing interest in the development of new medical devices. Currently, there are few such models that can be utilized at physiologic temperatures. In this work, the conductivities of agar, agarose and gelatin gels were manipulated by varying NaCl concentration from 0-1 mg/ml. The AC conductivity was measured at room and physiological temperatures (37°C) in the 100-500 Hz frequency range. Conductivity (σ) was nearly independent of frequency but increased linearly with NaCl concentration and was higher at physiological temperatures in these gels. A formula for predicting conductivity as a function of NaCl concentration was derived for each gel type. The overall goal is to develop a 'brain gel model', for studying low frequency electrical properties of the brain and other tissues at physiological temperatures.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Mater Sci Eng C Mater Biol Appl
Ano de publicação:
2012
Tipo de documento:
Article