Sonography of Gas in the Abdomen: A help rather than a hindrance

M. M. Horrow, C. L. Kirby, B. Enu, J. Stassi, H. K. Rosenberg

Research output: Contribution to journalReview articlepeer-review


Although large amounts of gas can obscure visualization of anatomic structures at sonography, smaller amounts of gas can be detected. Sonographically, gas causes 'ring-down' or 'comet-tail'(dirty-shadowing) artifacts. Sonography can detect pneumoperitoneum, portal and biliary gas, gas in visceral organs, and gas-filled abscesses. Examples of these gas collections are demonstrated with correlative imaging studies for confirmation.

Original languageEnglish
Pages (from-to)85-94
Number of pages10
Issue number2
StatePublished - 1998
Externally publishedYes


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