Patent ID: 6424853
Filing Date: 2002-07-23
Classification: A61B,G01R

Abstract:
A magnetic field measurement apparatus comprising:a magnetometer comprising SQUIDs and three detection coils each of which detects each of three orthogonal directional magnetic field components of a magnetic field generated from a subject to be inspected; a computer which synthesizes the magnitude of the magnetic field by a square sum of the three orthogonal directional magnetic field components of the magnetic field generated from the subject to be inspected; and a display which displays time variation of waveform of the magnitude of the synthesized magnetic field; wherein the signal of each of the three orthogonal directional magnetic field components detected by the magnetometer is divided into two signals, the magnitude of the magnetic field is synthesized by using one of the two signals, and the time variation of waveform of the magnitude of the synthesized magnetic field after passing through a high pass filter is displayed on the display.