Polymeric gastrointestinal MR contrast agents

Colin Tilcock, Evan C. Unger, Quet Fah Ahkong, Tom Fritz, Seymour H. Koenig, Rodney D. Brown

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Combining either paramagnetic (gadolinium chelatea) or superparamagnetic (ferrite) contrast agents with polymers such as polyethylene glycol or cellulose, or with simple sugars such as dextrose, results in mixtures that exhibit improved T1 and/or T2 relaxivity compared with that of the contrast agent alone. It is suggested that the addition of such inexpensive and nontoxic polymers or saccharides may improve the effectiveness and decrease the cost of enteric contrast agents.

Original languageEnglish (US)
Pages (from-to)463-467
Number of pages5
JournalJournal of Magnetic Resonance Imaging
Issue number4
StatePublished - 1991
Externally publishedYes


  • Contrast enhancement
  • Contrast media, experimental studies
  • Gadolinium
  • Gastrointestinal tract, MR studies, 70.1214
  • Iron
  • Relaxometry

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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