| 摘要 |
PROBLEM TO BE SOLVED: To more securely prevent generation of magnetic attraction than before.SOLUTION: Loop coils 11, 12 and 13 are set on a floor surface or under the floor surface near a bed 4 for mounting a subject 200. An access detecting part 15 detects the access of a magnetic body to an MRI apparatus 100 based on the change of induced electromotive force generated in the respective loop coils 11, 12 and 13 caused by the change of the strength of the magnetic field leaking from a static magnetic field generated in a static magnetic field magnet 1. A preventive motion control part 16 and a preventive motion part 17 perform preventive motions for preventing the magnetic body from being attracted with the magnetic field to the MRI apparatus 100 in response to the detection of the access of the magnetic body to the MRI apparatus 100 by the access detecting part 15. |
