Methoxylated gel particle contrast media for improved diagnostic imaging
OwnerEvan C. Ungerinventor
Life of this patent
Estimating the term…
Abstract
A contrast medium useful for diagnostic imaging is provided. The contrast medium comprises gel particles, preferably of less than about 90.mu. in mean diameter, the gel particles comprising at least one polymer entrapping at least one contrast enhancing metal.
Claims61
A pharmaceutically acceptable contrast medium comprising firm gel particles of less than about 90.mu. in mean diameter, said firm gel particles comprising at least one methoxylated natural or methoxylated modified natural polymer entrapping at least one contrast enhancing metal.
A pharmaceutically acceptable contrast medium prepared by the process of combining at least one methoxylated natural or methoxylated modified natural polymer and at least one contrast enhancing metal to form a firm gel wherein said polymer entraps said contrast enhancing metal, and particularizing the firm gel to form particles of less than about 90.mu. in mean diameter.
A pharmaceutically acceptable contrast medium comprising firm gel particles, said firm gel particles comprising at least one methoxylated natural or methoxylated modified natural polymer entrapping at least one contrast enhancing metal, wherein said polymer is non-crosslinked.
A pharmaceutically acceptable contrast medium prepared by the process of combining at least one methoxylated natural or methoxylated modified natural polymer and at least one contrast enhancing metal to form a firm gel wherein said polymer entraps said contrast enhancing metal, and particularizing the gel to form particles, wherein said polymer is non-crosslinked.
Dependencies are inferred from the claim text.