Abstract

Diluted ProHance [Gd(HP-DO3A), Squibb Diagnostics, Princeton, NJ], Sustacal (Meadjohnson, Evansville, IN), a nutritional drink, and a ProHance/Sustacal mixture have been investigated as potential oral contrast agents. At 2 T, T1-weighted (SE 500/20) images demonstrated hyperintense (positive) signal enhancement of rat GI tracts within 10 min after the ingestion of 2.0 mM Gd(HP-DO3A) or 2.0 mM ProHance/Sustacal. T2-weighted (SE 3000/80) images demonstrated hypointense (negative) signal intensity within 10 min after ingestion of 10 mM ProHance. Medical imaging applications of these oral contrast media are feasible.

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