| 摘要 |
PURPOSE:To display the spacial distribution of cerebral magnetic fields with three- dimensionally high quality and accuracy. CONSTITUTION:A virtual measuring spherical surface is searched in a measuring point approximating spherical surface searching section 1 from the measuring position of the measured cerebral magnetic field. The measuring position of the cerebral magnetic field is projected onto this virtual measuring spherical surface by a measuring position projecting section 2 and the measuring point on the virtual measuring spherical surface is projected to the measuring point on a mapping plane by a plane projecting section 3. The measuring point projected on this mapping plane is preprocessed in an interpolation preprocessing section 4 and is then subjected to linear interpolation in a data interpolating section 5. An isomagnetic field curve is searched from the interpolated data in an isomagnetic field curve searching section 6. This isomagnetic field curve is reverse-projected to the virtual measuring spherical surface by a reverse projecting section 7. The isomagnetic field curve reverse-projected on the virtual measuring spherical surface is subjected to clipping processing and is displayed as the curve on the virtual measuring spherical surface on a head shape three- dimensionally displayed by using the wire frame model for the head in a display section 8. |
