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Related Experiment Videos

Attenuation changes in periportal region during triple-phasic contrast-enhanced CT.

S Kanazawa1, A Tanaka, K Yasui

  • 1Department of Radiology, Okayama University Medical School, Japan.

Radiation Medicine
|July 10, 1999
PubMed
Summary

Periportal low attenuation is a common finding in the portal venous phase of triphasic contrast CT scans. This liver imaging observation is less frequent in the arterial or equilibrium phases.

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Area of Science:

  • Radiology
  • Medical Imaging
  • Hepatology

Background:

  • Periportal low attenuation on CT scans can indicate various liver conditions.
  • Understanding its prevalence across different contrast phases is crucial for accurate diagnosis.

Purpose of the Study:

  • To evaluate attenuation changes in the periportal regions of the liver.
  • To assess the occurrence of periportal low attenuation during triphasic contrast-enhanced CT.

Main Methods:

  • A study involving 93 patients undergoing triphasic contrast-enhanced CT.
  • Evaluation of periportal attenuation in arterial, portal venous, and equilibrium phases.
  • Assessment of factors potentially related to periportal low attenuation.

Main Results:

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  • Periportal low attenuation was observed in 69.8% of patients during the portal venous phase.
  • This finding was most common in the portal venous phase, less so in other phases.
  • No investigated factors were significantly associated with periportal low attenuation.

Conclusions:

  • Periportal low attenuation is a frequent observation during the portal venous phase of triphasic contrast CT.
  • Its occurrence is significantly less common in the arterial and equilibrium phases.