title: Reversible barium pumps for air contrast barium-enema examinations.
abstract: A modified pump to minimize problems encountered when using viscous barium mixtures for contrast examinations of the colon is described.
mesh_terms: D001466:Barium Sulfate; D003287:Contrast Media / Q000008:administration & dosage*; D004733:Enema / Q000295:instrumentation*
chemical_list: D003287:Contrast Media; D001466:Barium Sulfate