| 摘要 |
PROBLEM TO BE SOLVED: To accurately seize a condition of a living body action current source by obtaining living body magnetism data with every magnetism sensor every time when magnetism of a living body from an interest part of a subject is measured, and accurately removing a sudden noise by compating this data with a judging value previously found according to sensitivity with every magnetism sensor. SOLUTION: Magnetism of a living body generated from a living body action current source in an interest part is individually measured by plural magnetism sensors (SQUID sensors) 1. By a data processing part 6, additively averaging processing is performed on a large number of living body magnetism data groups obtained by repeating this measurement numerous times, and a condition of the living body action current source is seized on the basis of the living body magnetism data groups after the additively averaging processing. In this case, a judging value to judge whether living body magnetism data individually measured with every magnetism sensor 1 is valid or invalid, is calculated on the basis of sensitivity with every magnetism sensor 1, and when the living body magnetism data groups are judged as effective by comparing its judging value and living body magnetism data with each other, additively averaging processing is performed on its living body magnetism data groups. |
