能谱CT在头颅CTA应用时使用造影剂最少剂量的临床研究

Clinical study of the minimum dosage of contrast agent used in energy spectrum CT in head CTA

目的:探讨头颅CTA扫描时合理、精准地使用造影剂剂量。方法:收治行头颅CTA扫描患者100例,选取wills环作为观察区域,在不同造影剂剂量条件下扫描,得出三组图像,进行分析和比较。结果:头颅CTA扫描时图像符合临床诊断标准的最少造影剂剂量为40 m L。结论:头颅CTA扫描时合理、精准地使用造影剂剂量能减少造影剂对人体的危害。

Objective:To explore the reasonable and accurate dose of contrast agent in head CTA.Methods:100 patients with headCTA were selected.Wills ring was chosen as the observation region,which was scanned at different contrast agent dose,and weanalyzed the obtained three groups of images.Results:The minimum dose of contrast agent was 40 mL in head CTA,and the imageswere consistent with clinical diagnostic criteria.Conclusion:Reasonably and accurately using the contrast agent dose in head CTAcan reduce the harm to the human body.