| 摘要 |
PROBLEM TO BE SOLVED: To detect a force precisely without generating noises on the output image of a magnetic resonance imaging apparatus. SOLUTION: The force detector comprises a light emitting part 6 and a light receiving part 7 both arranged outside of the magnetic resonance imaging apparatus, a detecting part 2 arranged inside the magnetic resonance imaging apparatus, a data processing part 3 for processing the data detected at the light receiving part 7, a light transmitting tube 4 made of optical fibers for transmitting the light emitted from the light emitting part 6 to the detecting part 2, and a light receiving tube 5 made of optical fibers for receiving the light emitted from the distal end of the light transmitting tube 4 and transmitting the light to the light receiving part 7. A frame 9 made of nonmagnetic material is provided in the detecting part 2 for supporting the ends of the light transmitting tube 4 and the light receiving tube 5. In addition, an elastic deformation part 14 that changes its shape elastically according to the force applied on the detecting part 2 is provided on the frame 9 and supports either ends of the light transmitting tube 4 or the light receiving tube 5. COPYRIGHT: (C)2004,JPO
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