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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 CTA examination of cerebral arterial rings by CT perfusion. Methods Totally 14 patients had a history of transient ischemic attack (TIA) or ischemic cerebrovascular disease. CT perfusion scanning was performed first. CT value of the anterior cerebral artery was measured by measuring the peak time and the beginning of scanning time Differences guide the CTA delay in cerebral artery rings. Results This method was used to guide the brain CTA examination, the arterial ring showed satisfactory. Conclusions CT perfusion imaging in advance, according to the measured value of brain CTA examination to predict the delay time is a good way to ensure the success of CTA examination.