| 摘要 |
A probe 12 is correctly fixed to a calibrator body 1, and the calibrator body 1 is mounted on the base stand 22. With the surfaces thereof abutted against a block 14, and it is positioned in X-axis, Y-axis and Z-axis directions. Under this condition, image data is calibrated which is provided with the aid of an ultrasonic wave generated by the probe according to the spatial position data of the magnetic field receiver 27.
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