摘要目的评估双能(DE)CT鉴别急诊病人急性期出血与钙化的能力。方法该研究通过伦理委员会批准,回顾性分析2014年11月—12月所有急诊头颅DE CT平扫检查的病例。对DE CT影像进行后处理得到虚拟120 k V单能CT影像。纳入病例至少有一个单能CT影像上的脑实质内高密度 Abstract Objective To evaluate the ability of dual-energy (DE) CT in differential diagnosis of acute exacerbations and calcifications in emergency patients. Methods The study was approved by the ethics committee to retrospectively analyze all cases of emergency head CT CT scan in November-December 2014. The post-processing of the DE CT images resulted in a virtual 120 kV single-energy CT image. Inclusion of patients with at least one unilateral CT image of the brain parenchyma density