Seeds and Markers for Use in Imaging

Abstract

What is claimed is: 1 . A contrast agent comprising [(CoCl 2 ) n (C 2 H 5 NO 2 ) 1−n ] (where n=0.5-0.95). 2 . The contrast agent of claim 1 , wherein the contrast agent is disposed within a casing of a contrast marker. 3 . The contrast agent of claim 2 , wherein the casing is coated. 4 . The contrast agent of