Single-contrast and double-contrast radiography in the detection of gastritis.
D001466:Barium Sulfate; D005753:Gastric Mucosa / Q000000981:diagnostic imaging*; D005756:Gastritis / Q000000981:diagnostic imaging*; D005773:Gastroscopy; D006801:Humans; D011856:Radiographic Image Enhancement / Q000379:methods*
D001466:Barium Sulfate