Title :
Magnetic imaging of conductivity
Author :
Ahlfors, Seppo ; Ilmoniemi, Risto
Author_Institution :
Low Temperature Laboratory, Helsinki University of Technology, 02150 Espoo, Finland
fDate :
Oct. 29 1992-Nov. 1 1992
Abstract :
The conductivity distribution of an object can be estimated by injecting current with surface electrodes and by measuring the magnetic field thus generated. We call this method magnetic impedance tomography (MIT). A model experiment demonstrates how conductivity variations can be determined using the source estimation techniques of biomagnetism. Better knowledge of conductivity distributions obtained with MIT may help improve the accuracy of locating brain activity with magnetoencephalography (MEG) or electroencephalography (EEG).
Keywords :
Biomedical measurements; Brain modeling;
Conference_Titel :
Engineering in Medicine and Biology Society, 1992 14th Annual International Conference of the IEEE
Conference_Location :
Paris, France
Print_ISBN :
0-7803-0785-2
Electronic_ISBN :
0-7803-0816-6
DOI :
10.1109/IEMBS.1992.5762007
