The invention solves the problem of continuously monitoring wafer temperature during processing using an optical or fluoro-optical temperature sensor including an optical fiber having an end next to and facing the backside of the wafer. The invention includes acquiring MR data as the patient moves through the iso-center of the magnet while providing interactive control for the operator to change scan parameters and table motion and direction. The stator core has a plurality of slots rowed in a circumferential direction. Post-filtering the processed channel impulse response to eliminate the high frequency effects that are added by the windowing and gating operations. The input member and the output members of the power-split device are mounted rotatably about axes parallel to the longitudinal direction. Even when an external force is applied to one of two moving members reciprocally moving in the opposite phases each other, motion of the other moving member is transmitted to the moving member via the coupling member, so that reduction of amplitude of the moving member to which the external force is applied can be restricted, and a balance of amplitudes of two moving members is maintained.