Title :
An estimation algorithm of neuromagnetic sources in the cortical region using realistically-shaped head model
Author :
Saita, S. ; Nobuta, M. ; Niki, N. ; Nakasato, N. ; Yoshimoto, T.
Author_Institution :
Dept. of Opt. Sci., Tokushima Univ., Japan
Abstract :
We present the effect of the realistically-shaped head model on the MEG forward and inverse problem by using head model which is made up of triangle elements. Among the many suggested methods, the head model most widely used has been the sphere model. However the shape of the human head is different from a sphere and the conductivity of the head is not uniform. For accurate estimation, we present the effects of the realistically-shaped head model on the MEG forward and inverse problem by using a head model made up of triangle elements. We then perform the estimation on the extracted cortex by means of the Multiple Signal Classification (MUSIC) method
Keywords :
biomedical MRI; feature extraction; image classification; magnetoencephalography; medical image processing; MUSIC method; Multiple Signal Classification method; SQUID; Superconducting Quantum Interference Device; cortical region; estimation algorithm; magnetic resonance imaging; neuromagnetic sources; realistically-shaped head model; triangle elements; Brain modeling; Electric variables measurement; Humans; Magnetic field measurement; Magnetic fields; Magnetic heads; Multiple signal classification; Neurons; SQUIDs; Superconducting magnets;
Conference_Titel :
Image Processing, 1999. ICIP 99. Proceedings. 1999 International Conference on
Conference_Location :
Kobe
Print_ISBN :
0-7803-5467-2
DOI :
10.1109/ICIP.1999.817279
