Spot sign (SS) on computed tomography angiography (CTA) is associated with hematoma expansion (HE) and poor outcome after intracerebral hemorrhage (ICH). However, its predictive performance varies across studies, possibly because differentiating hyperdense hemorrhage from contrast media is difficult. We investigated whether dual-energy-CTA (DE-CTA), which can separate hemorrhage from iodinated contrast, improves the diagnostic accuracy of SS for predicting HE.

中文翻译：

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双能CT血管造影可提高斑点征兆的准确性，以预测脑出血中的血肿扩大。

计算机断层扫描血管造影（CTA）上的斑点征（SS）与血肿扩大（HE）和脑出血（ICH）后不良结局有关。但是，其预测性能在各个研究中有所不同，可能是因为很难区分高密度出血与造影剂。我们调查了双能CTA（DE-CTA）能否从碘造影剂中分离出出血，从而提高了SS预测HE的诊断准确性。