| 摘要 |
PURPOSE:To facilitate the correction of the dislocation of an ultrasonic image by adding a signal to the output of an encoder to a backlash corresponding to the dislocation of the ultrasonic image generated due to the backlash of a transmission mechanism and canceling the dislocation. CONSTITUTION:A wire target 90 for correcting an image has a wire 91, and the wire 91 is image-pickup by a probe 10. When an ultrasonic oscillator in the probe 10 is mho-reciprocated, two ultrasonic images of the wire 91 are projected along with the reciprocation. A correcting signal is set to the backlash of a proper magnitude by the operation of a digital switch 40, the correcting signal is added to the output signal of the encoder at the time of scanning, and the synchronizing signal of the ultrasonic image is adjusted. The magnitude of the correcting signal is adjusted until two images of the wire 91 coincide while watching a monitor 80. |
