| 摘要 |
PROBLEM TO BE SOLVED: To provide a living body magnetic field measuring device capable of analyzing a magnetic field source by measuring a vertical component Bz of a living body magnetic field without increasing the number of detecting coils. SOLUTION: This living body magnetic field measuring device is provided with plural fluxmeters being composed of a quantum interference element SQUID for detecting a living body magnetic field generated from a living body 2 and detecting a magnetic field component BZ(x, y, t) vertical to a living body surface, an operation processing means 8 for performing an operation for determining an equal magnetic field chart connecting equal points of a value at optional time (t) by determining the value in proportion to a square root of the square sum [S(x, y, t)= (dBZ(x, y, t)/dx)2+(dBZ(x, y, t)/dy)2}] of a rate of change in the (x) direction and that in the (y) direction of a magnetic field component BZ(x, y, t) and a display for displaying the equal magnetic field chart, and the operation processing means 8 sets the number of peaks of the equal magnetic field chart and position data on the peaks as the number of magnetic field sources and initial values of the positions of the magnetic field sources for solving an inverse problem, in an operation for solving the inverse problem for estimating a position and intensity of a magnetic field source in the living body. Accordingly, positions of plural current sources in the living body can be directly read from the equal magnetic field chart to easily solve the inverse problem. |
