| abstract |
An implantable fiducial marker (10) having a sealed cavity (14) for the introduction of an imaging agent that provides imaging capability in several modes, including Computed Tomographic imaging (CT) and Magnetic Resonance Imaging (MRI) is disclosed. The marker may be permanent, or it may be temporary and readily detachable from its anchor site (30). Combinations or agents imageable under CT scanning are combined with agents imageable under MRI scanning. |