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CT脑灌注成像(CTP)可以显示脑血流动力学信息,早期即可显示缺血的梗死灶和缺血性半暗带,预测可以存活的脑组织,对早期诊断和治疗脑梗死及判断预后具有重要价值。随着64层螺旋CT的广泛应用,明显缩短了扫描时间,CT平扫、CTP和CT血管造影(CTangiography,CTA)联合扫描20min内即可完成,而且利用CTA和平扫图像获得三维脑灌注血容量(perfused blood volume,PBV)成像,可以全面显示病灶范围,避免小病灶的漏诊。
CT cerebral perfusion imaging (CTP) can display cerebral hemodynamic information, showing ischemic infarcts and ischemic penumbra early, predicting viable brain tissue, early diagnosis and treatment of cerebral infarction and prognosis Has important value. With the extensive application of 64-slice spiral CT, scan time, CT scan, CTP and CT angiography (CTA) combined scan can be completed within 20min, and CTA and plain scan images can be used to obtain three-dimensional cerebral perfusion volume (perfused blood volume, PBV) imaging, can fully display the extent of the lesion, to avoid misdiagnosis of small lesions.