title: Ring down artefacts on abdominal sonography to predict pulmonary abnormalities in the emergency department.
abstract: Ring down artefacts are sometimes found when emergency physicians perform abdominal ultrasound to differentiate between various abdominal problems. We describe a patient who presented with right upper quadrant abdominal pain and whose ultrasound examination showed ring down artefacts posterior to the right hemidiaphragm, which led to the eventual diagnosis of pneumonia. Ring down artefacts on ultrasound may be used to predict pulmonary abnormalities. Awareness of this sonographic finding may assist in accurate diagnosis and administration of appropriate treatment without delay.
authors.affiliation: Department of Emergency Medicine, National Taiwan University Hospital, College of Medicine, Taipei, Taiwan. chulintsai@ntu.edu.tw
authors.forename: C-L
authors.initials: CL
authors.lastname: Tsai
authors.forename: H-P
authors.initials: HP
authors.lastname: Wang
authors.forename: W-C
authors.initials: WC
authors.lastname: Lien
authors.forename: C-C
authors.initials: CC
authors.lastname: Chen
authors.forename: T-I
authors.initials: TI
authors.lastname: Lai
authors.forename: W-J
authors.initials: WJ
authors.lastname: Chen
mesh_terms: D015746:Abdominal Pain / Q000000981:diagnostic imaging*; D016477:Artifacts; D004636:Emergency Service, Hospital; D006801:Humans; D008297:Male; D008875:Middle Aged; D018410:Pneumonia, Bacterial / Q000000981:diagnostic imaging*; D014463:Ultrasonography