| 摘要 |
<p>A positioning device for an ultrasound probe has first and second components. The first component includes a linear feature constrained to move in a plane parallel to a planar surface on which a spacer is positioned for calibration purposes. The second component, with which the probe is engaged, is engageable with the first component and movable relative thereto only in a plane containing the linear feature. Operating the probe while moving the positioning device over the planar surface enables the position of the probe to be sensed relative to the position of the fixed datum of the sensing device with the linear feature constrained always to lie centrally within the plane of the ultrasound beam so that the position of the linear feature detected within each ultrasound scan can be used to provide accurate position information which can be used to calibrate the position and orientation of the sensor of the ultrasound probe prior to use.</p> |
