CT 血管造影“斑点征”的动态特征。
Dynamic nature of the CT angiographic "spot sign".
机构信息
Department of Medical Imaging, Division of Neuro-imaging, University of Ottawa, The Ottawa Hospital, Ottawa, Ontario, Canada.
出版信息
Br J Radiol. 2010 Oct;83(994):e216-9. doi: 10.1259/bjr/74416385.
Abstract
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.
摘要
“点征”于 2007 年首次描述，表明颅内血肿（ICH）内的对比剂外渗焦点区域与血肿扩大相关。我们描述了一个病例，其中时间分辨动态 CT 血管造影（dCTA）仅在后期图像中显示“点征”的出现。这一发现强调了静态 CT 血管造影时间的重要性，如果进行得太早，可能导致假阴性诊断。
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