Hepatic attenuation on CT

Hepatic attenuation on CT, reflected by Hounsfield values, depends on a combination of factors including the presence or absence, as well as the phase, of IV contrast administration.

Allowing for all these factors, the mean unenhanced attenuation value is around 55 HU 4.

Pathology

Several intrinsic liver pathologies can be attributed a diffuse change in liver attenuation with an amount of hepatic fat being the most prevalent.

Aetiology
Diffusely increased attenuation
Diffusely decreased attenuation
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Article information

rID: 8020
Section: Gamuts
Tags: liver, cases
Synonyms or Alternate Spellings:
  • Increased hepatic attenuation
  • Descreased hepatic attenuation
  • High attenuation - Liver
  • Low attenuation - Liver
  • Hyperdense liver

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Cases and figures

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    Case 1: decreased with diffuse hepatic steatosis
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    Case 2: increased with amiodarone hepatotoxicity
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    On non-contrast C...
    Case 3: increased with haemochromatosis
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    Case 4: increased with amiodarone hepatotoxicity
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    Case 5: increased in thalassaemia
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