| 摘要 |
<p>A system for supporting frameless stereotactic surgery in which a plurality of two-dimensional images are acquired of a rigid surgical target immediately before the target is exposed surgically. The two-dimensional images are registered with both a reference coordinate system and with a previously acquired three-dimensional image of the target to provide a coordinate transformation from the reference coordinate system to the target. Even after the target is exposed surgically, the acquisition and registration of further two-dimensional images is continued, to keep the coordinate transformation up to date. Registration of the two-dimensional images to the reference coordinate system is facilitated by a tracker that is rigidly attached to the probe that is used to acquire the two-dimensional images. Preferably, one or more similar trackers are attached rigidly to the surgical target to enhance the updating of the coordinate system.</p> |
