摘要
[目的]探讨头颈血管双能量血管造影（DE-CTA）的辐射安全性及临床应用价值.[方法]应用CT减影血管成像（DS-CTA）对60例疑头颈部血管病变者进行扫描,并同时进行DE-CTA的模拟扫描,比较两者的辐射剂量;另选取一组60例疑头颈部血管病变者行DE-CTA扫描,在DS-CTA、DE-CTA两组扫描图像中分别选择四个解剖部位,对比测定其血管内造影剂浓度并统计两组扫描的时间.[结果]头颈血管DE-CTA辐射剂量高于DS-CTA约17.12%,近段血管图像质量等同于DS-CTA,远段血管图像质量逊于DS-CTA,完成扫描时间明显短于DS-CTA.[结论]头颈部血管DE-CTA与DS-CTA扫描各有其长处及缺点,应根据患者的综合情况选择合理的扫描方案,获得最佳图像.
[Objective] To explore the radioactive safety and clinical value of dual energy CT angiography （DE-CTA） of cranial and cervical vessel. [Methods] Sixty patients suspected of cranial and cervix vascular diseases underwent digital subtraction angiography（DS-CTA）. Meanwhile, DE-CTA simulating-scan was performed. The radiation doses were compared between DA-CTA and DE-CTA. Another 60 patients suspected of cranial and cervix vascular diseases underwent DE-CTA. Four different anatomic slices were chosen to detect the concentration of intravascular contrast medium and calculate scanning time in all cases. [Results] The radi- ation dose of DECTA was 17.12% which was higher than that of DS-CTA. Image quality was equal in two groups in the proximal segment of vessels, but was different in the distal segment of vessels. Scanning time decreased significantly in DE-CTA group. [Conclusion] Compared with DS-CTA, DE-CTA has both advantages and disadvantages. Radiologists should choose reasonable scanning method according to the complex condition of the patients so as to obtain the best image.
出处
《医学临床研究》
CAS
2010年第10期1840-1842,共3页
Journal of Clinical Research
