X-RAY DIAGNOSTICS CONTRAST AGENT (OPTIONS) AND METHOD OF PREPARATION THEREOF Russian patent published in 2001 - IPC

FIELD: roentgenology. SUBSTANCE: agent contains powdered oxygencontaining compound of rare-earth metal and organic additive, the former, in particular, being tantalate of metal selected from group including yttrium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, or bismuth with particle size 1-5 mcm and 5-10 mcm, and organic additive is a cellulose derivative or polyvinylpyrrolidone. Also provided is contrast agent, in which organic additive dextrane/diethylaminoethyl chloride mixture at ratio 1: 2. EFFECT: increased contrast at low dose administered and reduced excretion time. 16 cl, 4 ex