以脑CT灌注的峰值时间作为脑CTA扫描延时的应用  

The Time to Peak of Cerebral CT Perfusion as Delay Time after Contrast Media Administration in Cerebral CTA Study :An Applicative Study

作　　者：梁琰[1] 卢宁[1] 关战献[1] 杨杰[1] 李伟[1] 唐光健[2] 

机构地区：[1]三门峡市中心医院CT室,河南三门峡472000 [2]北京大学第一医院放射科

出　　处：《实用放射学杂志》2007年第4期540-541,共2页Journal of Practical Radiology

摘　　要：目的应用CT脑灌注方法准确预测脑动脉环CTA检查延迟时间。方法14例病人均有典型的短暂性脑缺血(TIA)发作史或缺血性脑血管病史,先对其进行CT脑灌注扫描,通过测量大脑前动脉CT值达峰时间与开始扫描时间的差值指导脑动脉环CTA的延迟时间。结果应用此方法指导脑CTA检查,动脉环显示均较满意。结论先行CT脑灌注成像,根据测量值预测脑CTA检查延迟时间是保障CTA检查成功的一种较好的方法。Objective To evaluate the accuracy of the delay time after contrast media administration in intraeranial CTA study during brain CT perfusion study. Methods 14 patients with history of episodes of typical transient ischemic attack （ TIA ） or ischemic cerebrovascular disease were included. After cerebral CT perfusion study, the CTA study of Willis circle was performed with the delay time by measuring the different value between the time to peak （TTP） and beginning scan time of anterior cerebra/artery in CT perfusion. The quality of the CTA images were evaluated. Results All the CTA images of the Willis circle were satisfactory. Conclusion It＇ s a satisfactory method based on successful cerebral CTA study to take the time to peak in CT perfusion as the delay time.

关 键 词：脑 灌注 体层摄影术 X线计算机 

分 类 号：R322.81[医药卫生—人体解剖和组织胚胎学] R814.42[医药卫生—基础医学]