Double target sign (hepatic abscess)

The double target sign is a characteristic imaging feature of liver abscess demonstrated on contrast enhanced CT scans, in which a central, fluid-filled low attenuation lesion is surrounded by a high attenuation inner rim and a low attenuation outer ring 1,2.

The inner ring (abscess membrane) demonstrates early contrast enhancement which persists on delayed images, in contrast to the outer rim (oedema of the liver parenchyma) which only enhances on delayed phase 2

Inspired signs
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Article information

rID: 46825
Section: Signs
Tags: ref, cases
Synonyms or Alternate Spellings:
  • Double target sign: hepatic abscess

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Cases and figures

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    Case 1: double target sign
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