MAGNETIC FIELD MEASURING SYSTEM

PURPOSE:To exactly measure a magnetic field without any adverse influences caused by an organic magnetic field by providing a magnetic field measuring means to detect the fine organic magnetic field of a reagent on a bed while being supported by a gantry constituted in the shape of a gate. CONSTITUTION:This magnetic field measuring system 7 is provided with a bed 8 to load the reagent, gantry 9 constituted in the shape of a gate, and superconducting quantum interference magnetic flux meter 10. This magnetic field measuring means detects the fine organic magnetic field at the head of the testee on the bed. The gantry 9 is errected on a floor 11, and the bed 8 is arranged on this floor 11. The bed 8 is provided with a seat part 12 where the reagent sits down, back part 13 provided to displace the angle to this seat part 12 and footrest part 14, and these parts can be elevated/displaced by a displacing means 15 and turned to the state of a so-called reclining seat. The bed can also be moved on the floor 11 by a moving means 17. At the upper part of the back part 13, a U-shaped holding member 20 is provided for fixing the head of the testee.