Title :
An estimation algorithm for neuromagnetic source distribution using MRI information
Author :
Mino, Kazuhiro ; Niki, Noboru ; Nakasato, Nobukazu
Author_Institution :
Fac. of Eng., Tokushima Univ., Japan
Abstract :
We present an estimation algorithm for the magnetic sources in the human brain using MRI information. It is difficult to make a complete estimation of the whole brain magnetic sources, but it is known that the neurons exist densely in the cerebral cortex. For this reason, in this preliminary study we limit the estimation region to the surface of the cortex. We consider all the cortex surface points as current dipoles, and by using the MUSIC method we decide the real dipoles. We give here the results of our algorithm applied to simulation data and a real human brain data
Keywords :
biomagnetism; biomedical NMR; brain; brain models; feature extraction; image classification; inverse problems; medical image processing; neurophysiology; MRI information; MUSIC method; cerebral cortex; cortex surface; current dipoles; estimation algorithm; human brain; inverse problem; magnetic sources; multiple signal classification; neuromagnetic source distribution; neurons; real dipoles; simulation data; whole brain magnetic sources; Eigenvalues and eigenfunctions; Equations; Magnetic field measurement; Magnetic fields; Magnetic resonance imaging; Magnetic sensors; Matrices; Matrix decomposition; Multiple signal classification; Parameter estimation;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference Record, 1995., 1995 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-3180-X
DOI :
10.1109/NSSMIC.1995.510464
