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, 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.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.25 alkyl, cycloalkyl and halo lower-alkyl are optionally substituted with fluoro-lower-alkyl, aryl, lower-alkoxy, hydroxy, carboxy, lower-alkoxy carbonyl or lower-alkoxy-carbonyloxy and said acetyl is optionally substituted with fluoro-lower-alkyl, aryl, lower-alkoxy, hydroxy, lower-alkoxy carbonyl or lower-alkoxy-carbonyloxy; n is 1-4; y is 1-4; and x is 1 or 2 in a pharmaceutically acceptable carrier comprising a cellulose derivative.
公开了用于口服或逆行检查消化道的X射线造影剂组合物,包括以下
化学式的X射线产生剂或其药学上可接受的盐##STR1##以及其在消化道诊断放射学中的使用方法,其中Z为H、卤素、C.sub.1 -C.sub.20烷基、环烷基、较低的烷氧基、
氰基,其中烷基和环烷基基团可被卤素或卤素较低烷基基团取代;R.sub.1和R.sub.2独立地为H、C.sub.1 -C.sub.25烷基、环烷基、乙酰基或卤素较低烷基,其中所述的C.sub.1 -C.sub.25烷基、环烷基和卤素较低烷基可选择地被
氟代较低烷基、芳基、较低烷氧基、羟基、羧基、较低烷氧羰基或较低烷氧基羰氧基取代,所述的乙酰基可选择地被
氟代较低烷基、芳基、较低烷氧基、羟基、较低烷氧羰基或较低烷氧基羰氧基取代;n为1-4;y为1-4;x为1或2,在包含
纤维素衍
生物的药学上可接受的载体中。