title: The Rigler sign.
authors.affiliation: Department of Radiology, Wilford Hall Medical Center, 759th MDTS/MTRD, 2200 Bergquist Dr, Suite 1, Lackland AFB, TX 78236-5300, USA. jly15544@hotmail.com
authors.forename: Justin Q
authors.initials: JQ
authors.lastname: Ly
mesh_terms: D034861:Abdominal Wall; D006801:Humans; D011027:Pneumoperitoneum / Q000000981:diagnostic imaging*; D011860:Radiography, Abdominal; D016683:Supine Position