期刊
AMERICAN JOURNAL OF ROENTGENOLOGY
卷 193, 期 6, 页码 W490-W496出版社
AMER ROENTGEN RAY SOC
DOI: 10.2214/AJR.08.1732
关键词
abdominal imaging; gadoxetic acid; hemangioma; liver; MRI
OBJECTIVE. The purpose of this article is to describe the pseudo washout sign of high-flow hepatic hemangioma that mimics hypervascular tumor on gadoxetic acid-enhanced MRI. CONCLUSION. High-flow hemangiomas might show relatively low signal intensity because of gadoxetic acid contrast uptake in the surrounding normal liver parenchyma during the equilibrium (3-minute delay) phase. Such findings are called pseudo washout and can mimic hypervascular hepatic tumors. However, high-flow hemangioma can be diagnosed by observing bright signal intensity on T2-weighted imaging, arterial phase-dominant enhancement, pseudo washout sign during the equilibrium phase, and isointense or slightly increased signal intensity on subtraction images.
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