Evaluation of liver fibrosis by investigation of hepatic parenchymal perfusion using contrast-enhanced ultrasound: An animal study

Tin Cheung Ying, Gina Leung, Thomas Y H Lau, George L. Tipoe, Esther S T Lee, Queeny W H Yuen, Yan Ping Huang, Yongping Zheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

Purpose:: To investigate the value of assessing the hepatic parenchymal perfusion in contrast-enhanced ultrasound (CEUS) for evaluating liver fibrosis, using an animal model. Methods:: Seventy Sprague-Dawley rats were divided into experimental (n = 35) and control (n = 35) groups. In the experimental group, liver fibrosis was induced by intraperitoneal injection of carbon tetrachloride. CEUS of the liver was performed at a 2-week interval for 14 weeks. Signal intensity of liver parenchyma was analyzed with time-intensity curves. Histologic examination of liver specimens of the animals was performed to assess the fibrosis stage. Results:: The peak signal intensity of hepatic parenchymal perfusion in stage 2-3 fibrosis was significantly lower than that in stage 0-1. The time to peak intensity of hepatic parenchymal perfusion was significantly longer in the experimental group than the control group, and in the stage 3 fibrosis than in stages 0-2 fibrosis. Using time to peak intensity of hepatic parenchymal perfusion to distinguish stage 3 fibrosis and stages 0-2 fibrosis, the optimum cutoff was 75,000 milliseconds with the sensitivity and specificity of 67% and 78%, respectively. Conclusions:: This animal study showed that CEUS has the potential to be a complementary imaging tool in the evaluation of liver fibrosis.
Original languageEnglish
Pages (from-to)462-470
Number of pages9
JournalJournal of Clinical Ultrasound
Volume40
Issue number8
DOIs
Publication statusPublished - 1 Oct 2012

Keywords

  • Contrast media
  • Fibrosis
  • Liver
  • Ultrasonography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Medicine(all)

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