Fiducial marker devices, tools, and methods
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United States of America Patent
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May 22, 2012
Grant Date -
Sep 27, 2007
app pub date -
Mar 21, 2007
filing date -
Feb 25, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
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.
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