Embodiments include a fiducial deployment system. A fiducial may include dimples to enhance echogenicity and/or to provide for engagement with a delivery cannula or stylet. The needle system may be configured to deliver a plurality of fiducials to a target location in serial fashion, one at a time, when the fiducials are coaxially disposed around a central deployment member that may be embodied as a delivery cannula or stylet. In certain embodiments, echogenic placement of fiducials may present certain advantages. An elongate structure may be included that is configured to distally advance fiducials along the deployment member.
