Hepatic hemangioma: quantitative color power US angiography--facts and fallacies

Radiology
L K YoungC Metreweli

Abstract

To explore the origin of signals detected with color power ultrasound (US) angiography (CPA) and evaluate a semiquantitative method to assess signals in hepatic hemangiomas. Twenty-four adult patients with 27 hepatic hemangiomas (< 2 cm in diameter) and five patients with five hyperechoic hepatic metastases underwent CPA and conventional color Doppler US in this prospective study. A sponge phantom was studied to determine whether the origin of CPA signals was related to architecture. The mean number of signals and the signal density in each lesion were scored. A "diffuse blush" was seen in all capillary hemangiomas at CPA, whereas no signal was seen at color Doppler US. The sponge phantom test produced a CPA appearance similar to that of capillary hemangiomas. Quantitative analysis of CPA images of hepatic hemangiomas showed a mean of 16.1 signals per cubic centimeter and a mean signal area of 25%. Hyperechoic avascular hepatic metastases resulted in CPA images similar to those of hepatic hemangiomas, with no quantitative difference in signal count, despite a mild qualitative difference at CPA. CPA signals in hepatic hemangiomas appear to be related more to architecture than to true capillary flow. There is a qualitative differ...Continue Reading

Citations

Mar 5, 2008·Abdominal Imaging·Tommaso Vincenzo BartolottaRoberto Lagalla
Dec 3, 2015·Japanese Journal of Radiology·Yasuyuki YamashitaSatoru Takahashi
Dec 26, 2001·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·K W KimB I Choi
Feb 7, 2001·Journal of Clinical Ultrasound : JCU·A B PerkinsJ J Cronan
Apr 27, 2001·Journal of Hepatology·S GaianiL Bolondi
Nov 7, 2002·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Wei Tse YangJenny Chang

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