[gas″tro-gra´fin] trademark for a preparation of meglumine diatrizoate, a diagnostic radiopaque medium.
gastrografin
, gastrographin (gas″trō-graf′ĭn) A liquid radiologic contrast medium that absorbs x-rays because of its iodine content. It can be administered orally or rectally to highlight the internal structure of the gastrointestinal tract.