Dynamic nature of the CT angiographic "spot sign"

被引：20

作者：

Chakraborty, S. ^{[1
]}

Blacquiere, D. ^{[2
]}

Lum, C. ^{[1
]}

Stotts, G. ^{[2
]}

机构：

[1] Univ Ottawa, Ottawa Hosp, Div Neuroimaging, Dept Med Imaging, Ottawa, ON K1Y 4E9, Canada

[2] Univ Ottawa, Ottawa Hosp, Dept Neurol, Ottawa, ON K1Y 4E9, Canada

来源：

BRITISH JOURNAL OF RADIOLOGY | 2010年 / 83卷 / 994期

关键词：

PRIMARY INTRACEREBRAL HEMORRHAGE; HEMATOMA EXPANSION; EXTRAVASATION; CONTRAST;

D O I：

10.1259/bjr/74416385

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

100231 [临床病理学]; 100902 [航空航天医学];

摘要：

The "spot sign'", first described in 2007, has shown that a focal area of contrast extravasation within an intracerebral haematoma (ICH) can be correlated with haematoma expansion. We describe a case where time-resolved dynamic CT angiography (dCTA) shows the appearance of the "spot sign" only in later images. This finding highlights the importance of timing of the static CT angiogram which, if performed too early, might result in a false-negative diagnosis.

引用

收藏

页码：E216 / E219

页数：4

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