David M. Lee;Thomas L. Bridges;Mark Stephen Freas;Matthew S. Solar
发明人:
Matthew S. Solar,Thomas L. Bridges,David M. Lee,Mark Stephen Freas
申请号：
US11689356
公开号：
US08185184B2
申请日:
2007.03.21
申请国别(地区):
US
年份:
2012
代理人:
摘要：
This document discusses, among other things, fiducial marker devices, tools, and methods. One example illustrates a combined computed tomography (CT) imagable fiducial locator head, an integral bone screw, and an integral divot for receiving a positioning wand of an image-guided surgical (IGS) workstation. A further example includes a fluid/gel-absorbing coating or cover into which a magnetic resonance (MR) imagable fluid is introduced, thereby permitting both CT and MR imaging. Protective caps and collars may be used to protect the fiducial marker from mechanical impact and/or to guide the fiducial marker during affixation. A bull's-eye or other template is used to select a center of a substantially spherical fiducial marker head on an image, such as for use during patient registration.
