Efficacy of contrast-enhanced ultrasound washout rate in predicting hepatocellular carcinoma differentiation

Ultrasound in Medicine & Biology
Yan FengXiang Zhou

Abstract

The aim of this retrospective study was to evaluate the efficacy of contrast-enhanced ultrasound (CEUS) washout rate in predicting hepatocellular carcinoma (HCC) differentiation. Two hundred seventy-one patients underwent liver resection for HCC between April 2008 and December 2012 after being examined by CEUS using the contrast agent SonoVue with a low mechanical index (<0.1) in a routine procedure. Contrast agent washout rates obtained from video images were divided into four categories from slow to fast: WR1 = no washout in all phases (slowest); WR2 = washout after 120 s from contrast injection (late-phase washout); WR3 = washout between 41 and 120 s from contrast injection (portal venous washout); WR4 = washout before 40 s from contrast injection (fastest washout rate). HCC nodules were graded as well, moderately and poorly differentiated. Spearman rank correlation and χ(2)-tests were used to assess group relationships and differences. Receiver operating characteristic curve analysis was used to determine the diagnostic predictive value of CEUS. Among the 271 patients, 18 (6.6%) had well differentiated, 150 (55.4%) had moderately differentiated and 103 (38.0%) had poorly differentiated HCC. Statistical tests indicated that ...Continue Reading

References

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Related Concepts

SonoVue
Nodule
Structure of Hepatic Vein
Blood Vessel
Liver Carcinoma
Enhanced S-Cone Syndrome
Cholangiocarcinoma
Tomography, Ultrasonic
Portal Vein Structure
Neoplasms

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