Ct perfusion images can reflect the presence and degree of cerebral ischemia. It is a useful tool to evaluate acute cerebral ischemia.
CT灌注图像能正确反应出脑缺血的存在和严重程度，可以作为评价急性脑梗塞的方法。
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.
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。
Although various methods have been used to measure cerebral perfusion including PET, SPECT, xenon CT, and TCD, these require the patients to remain still for a long period.
尽管已经有很多方式用于测量大脑灌注，包括PET、SPECT、氙ct和TCD，但是这些要求患者较长一段时间保持静止。
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