US Patent 12011323 Multi-modal fiducial marker

A multi-layer fiducial marker includes a graphic pattern layer having an upper surface including a registration pattern and a lower surface coated with a radiopaque material and a hard coat film layer disposed over the radiopaque material. A ballistic gel layer is stacked underneath the graphic pattern layer and a first adhesive layer is disposed between the ballistic gel layer and the hard coat film layer. A second adhesive layer affixed to a lower surface of the ballistic gel to facilitate attachment of the marker to an imaging subject.