Abstract: Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising a barium salt in a pharmaceutically acceptable carrier comprising a cellulose derivative; and methods for their use in diagnostic radiology of the gastrointestinal tract.

Abstract: Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising iodinated polymeric, water-insoluble beads having a particle size of from about 0.01 to about 1000.mu. wherein said iodinated polymeric beads comprise a polymer containing repeating units of the formula (I) ##STR1## wherein A is a repeating organic unit in the backbone chain of the polymer; and X is an organic moiety containing or iodinated eromatic group and a hydrophilic group, said moiety having an iodine content within the range of from about 40 to about 80 weight percent based or the molecular weight of X, in a pharmaceutically acceptable carrier comprising a cellulose derivative.

Abstract: Disclosed are contrast agents of the formula ##STR1## wherein Z is H, halo, C.sub.1 -C.sub.20 alkyl, cycloalkyl, lower alkoxy, alkoxycarbonyl, cyano, where the alkyl and cycloalkyl groups can be substituted with halogen or halo-lower-alkyl groups;R is C.sub.1 -C.sub.25 alkyl, cycloalkyl, ##STR2## or halo-lower-alkyl; each of which may be optionally substituted with halo, fluoro-lower-alkyl, aryl, lower-alkoxy, hydroxy, carboxy, lower-alkoxy carbonyl or lower-alkoxy-carbonyloxy;(CR.sub.1 R.sub.2).sub.p --(CR.sub.3 .dbd.CR.sub.4).sub.m Q, or (CR.sub.1 R.sub.2).sub.p --C.tbd.C--Q;R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently H or lower-alkyl, optionally substituted with halo;x is 1-4;n is 1-4;m is 1-15;p is 1-20; andQ is H, lower-alkyl, lower-alkenyl, lower-alkynyl, lower-alkylene, aryl, or aryl-lower alkyl;in an aqueous, pharmaceutically acceptable carrier comprising a cellulose derivative.

Abstract: Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising a nonionic x-ray producing agent in combination with a cellulose derivative in a pharmaceutically acceptable carrier; and methods for their use in diagnostic radiology of the gastrointestinal tract.

Abstract: Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising an x-ray producing agent of the formula or a pharmaceutically acceptable salt thereof ##STR1## and methods for their use in diagnostic radiology of the gastrointestinal tract, whereinZ is H, halo, C.sub.1 -C.sub.20 alkyl, cycloalkyl, lower alkoxy, cyano, where the alkyl and cycloalkyl groups can be substituted with halogen or halo-lower-alkyl groups;R.sub.1 and R.sub.2 are independently H, C.sub.1 -C.sub.25 alkyl, cycloalkyl, acetyl or halo-lower-alkyl, wherein said C.sub.1 -C.sub.

Abstract: Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising an x-ray producing agent of the formula or a pharmaceutically acceptable salt thereof ##STR1## wherein R is methyl, ethyl, n-propyl, C.sub.4 -C.sub.25 alkyl, cycloalkyl, unsaturated allyl or halo-lower-alkyl, each of which may be optionally substituted with halo, fluoro-lower-alkyl, aryl, lower-alkoxy, hydroxy, carboxy or lower-alkoxy carbonyl; (CR.sub.1 R.sub.2).sub.p --(CR.sub.3 .dbd.CR.sub.4).sub.m Q, or (CR.sub.1 R.sub.2).sub.p --C.tbd.C--Q;R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently H, lower-alkyl, optionally substituted with halo;n is 2-5;m is 2-5;p is 1-10; andQ is H, lower-alkyl, lower-alkenyl, lower-alkynyl, lower-alkylene, aryl, or aryl-lower alkyl;in a pharmaceutically acceptable carrier comprising a cellulose derivative.

Abstract: Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising an x-ray producing agent of the formula or a pharmaceutically acceptable salt thereof ##STR1## wherein Z is H, halo, C.sub.1 -C.sub.20 alkyl, cycloalkyl, lower alkoxy, cyano, where the alkyl and cycloalkyl groups can be substituted with halogen or halo-lower-alkyl groups;R is C.sub.1 -C.sub.25 alkyl, cycloalkyl, or halo-lower-alkyl, each of which may be optionally substituted with halo, fluoro-lower-alkyl, aryl, lower-alkoxy, hydroxy, carboxy, lower-alkoxy carbonyl or lower-alkoxy-carbonyloxy;(CR.sub.1 R.sub.2).sub.p -- (CR.sub.3 =CR.sub.4).sub.m Q, or (CR.sub.1 R.sub.2).sub.p -- C.dbd.C--Q;R.sub.1, R.sub.2, R.sub.3 and R.sub.

Abstract: Disclosed are contrast agents of the formula ##STR1## wherein ##STR2## Z is H, halo, C.sub.5 -C.sub.20 alkyl, cycloalkyl, lower alkoxy, cyano, where the alkyl and cycloalkyl groups can be substituted with halogen or halo-lower-alkyl groups;R is C.sub.1 -C.sub.25 alkyl, cycloalkyl, aryl or halo-lower-alkyl, each of which may be optionally substituted with lower-alkoxy, hydroxy, carboxy or lower-alkoxy carbonyl, lower-alkenyl, lower-alkynyl, lower-alkylene or lower-alkoxy-carbonyloxy;n is 1-5;y is 0-4; andw is 1-4;in a pharmaceutically acceptable carrier comprising a cellulose derivative.

Abstract: Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising a crystalline contrast agent in a pharmaceutically acceptable carrier comprising a cellulose derivative; and methods for their use in diagnostic radiology of the gastrointestinal tract.