title: Double-contrast enemas in children: the "knee-chest" view of the rectosigmoid colon.
abstract: A modified prone lateral projection of the rectosigmoid colon with horizontal beam is described for double-contrast barium enemas in children. Elevation of the buttocks allows barium to drain retrograde from the air-filled rectum, improving visualization in selected patients.
mesh_terms: D000367:Age Factors; D001466:Barium Sulfate; D002648:Child; D012809:Colon, Sigmoid / Q000000981:diagnostic imaging*; D004733:Enema; D006801:Humans; D011187:Posture; D011859:Radiography; D012007:Rectum / Q000000981:diagnostic imaging*
chemical_list: D001466:Barium Sulfate