| abstract |
(57) [Summary] (Revised) [Purpose] Oral or rectal X for gastrointestinal examination The invention relates to line contrast compositions and their use in diagnostic radiology of the gastrointestinal tract. The imaging composition comprises, in a pharmaceutically acceptable carrier, a polymeric material capable of forming a coating on the gastrointestinal tract and an X-ray imaging agent of the formula: [Chemical 1] (The formula is H, Cl, CN, C 1 -C 20 alkyl, lower alkoxy, etc .; R 1 , R 2 are F, Cl, CF 3 , lower alkoxy, fluoro lower alkyl, etc .; and n is 1 to 1. 5, y is 1 to 4, and x is 1 and 2. ) |