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摘要目的评估使用64层螺旋CT以及低剂量对比剂(25mL)在诊断和处理成人非创伤性蛛网膜下腔出血(SAH)的技术性能和诊断价值。方法本研究未在美国本土施行,获得伦理委员会批准。对73例经CT平扫诊断为非创伤性SAH的病人进行颅脑CTA检查。2名放射科医师采用2条标准对影像进行评估:动脉强化程度和静脉干扰。各自以血管成像为参考标准来评估其诊断价值(病变检出及治疗决策)。
Abstract Objective To evaluate the performance and diagnostic value of using 64-slice spiral CT and low dose contrast medium (25mL) in the diagnosis and treatment of adult non-traumatic subarachnoid hemorrhage (SAH). Methods This study was not conducted in the United States and was approved by ethics committee. CTA examination was performed on 73 patients diagnosed as non-invasive SAH by CT plain scan. Two radiologists evaluated the images using two criteria: arterial enhancement and venous disturbance. Their respective diagnostic values (lesion detection and treatment decisions) were assessed using vascular imaging as a reference standard.