Air fluid levels: their occurrence in normal patients and their role in the analysis of ileus.
D000328:Adult; D000388:Air; D001826:Body Fluids; D002400:Cathartics / Q000627:therapeutic use; D005260:Female; D005740:Gases; D005769:Gastrointestinal Motility; D006801:Humans; D007415:Intestinal Obstruction / Q000175:diagnosis / Q000000981:diagnostic imaging*; D007421:Intestine, Small; D008722:Methods; D008875:Middle Aged; D011187:Posture; D011859:Radiography; D013997:Time Factors
D002400:Cathartics; D005740:Gases