title: Nasogastric suction to improve gastrointestinal scanning.
mesh_terms: D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D006801:Humans; D007441:Intubation, Gastrointestinal; D011877:Radionuclide Imaging; D013667:Technetium
chemical_list: D013667:Technetium