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Ring down artefacts on abdominal sonography to predict pulmonary abnormalities in the emergency department
  1. C-L Tsai1,
  2. H-P Wang1,
  3. W-C Lien1,
  4. C-C Chen2,
  5. T-I Lai1,
  6. W-J Chen1
  1. 1Department of Emergency Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
  2. 2Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
  1. Correspondence to:
 Dr C-L Tsai
 Department of Emergency Medicine, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei, 100, Taiwan; chulintsai{at}ntu.edu.tw

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.

  • ED, emergency department
  • EP, emergency physician
  • US, ultrasound
  • ring-down
  • artefact
  • ultrasound
  • emergency

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Footnotes

  • Competing interests: none declared