蛛网膜下腔出血的CT灌注成像研究

目的：探讨CT灌注成像评估蛛网膜下腔出血后脑血流动力学变化的价值。方法：实验组21例蛛网膜下腔出血（包括延迟发生脑梗死3例）和7例对照组病人进行CT灌注成像，比较各脑叶CT灌注参数值的差异。结果：实验组中有10例病人在灌注图上发现肉眼可见的低灌注区，CT平扫未见低密度改变。CBF值在实验组中发生延迟脑梗塞组为21.35±3.42，不发生组为23.37±2.29，对照组为26.59±2.47，实验组与对照组之间有显著性差异；TTS值延迟脑梗塞组为32.26±12.08，无延迟脑梗塞组为19.14±4.88，两者之间具有显著性差异，其余灌注参数在各组之间未见显著性差异。结论：CT灌注成像能够反映蛛网膜下腔出血后的脑血流动力学变化。

The research of CT perfusion after subarachnoid hemorrhage

Objective:To discuss the value and the effect of CT perfusion imaging on the cerebral hemodynamic changes after subarachnoid hemorrhage.Methods:CT perfusion imaging was employed in 21 cases of subarachnoid hemorrhage(including 3 delayed cerebral infarction) as the experimental group and 7 patients as the control group to compare the difference of lobar CT perfusion parameters;comparing the CT perfusion photo and plain scan in the diagnosis of cerebral ischemia in the test group.Results:In the experimental g...