MRI联合CT灌注成像诊断超急性期脑梗死价值分析

Diagnostic Value of MRI Combined with CT Perfusion Imaging in Hyperacute Cerebral Infarction

目的探讨MRI联合CT灌注成像(CTP)诊断超急性期脑梗死价值分析。方法回顾性分析2018年1月至2019年9月我院影像中心经医师诊断为超急性期脑梗死的82例患者的MRI及CTP影像学资料。分析MRI及CTP影像学图像,统计MRI、MRI联合CTP的检出率、各部位病灶检出数目。结果超急性期脑梗死患者MRI可见病变在DWI呈明显高信号,但T1WI、T2WI、FLAIR均无明显异常信号或T2WI呈稍高信号;CT平扫多显示正常或局部脑沟略有变窄,CTP CBF图显示异常低灌注区,且MTT均有延长。在82例超急性期脑梗死患者中,MRI联合CTP检查检出率为96.34%,检出病灶数131个,明显高于MRI检查的80.94%,检出病灶数93个,且MRI联合CTP检查检出多个病灶的患者比例为39.02%,显著高于MRI检查(18.29%,P<0.05),但两种检查方式筛查脑梗死各部位病灶数差异无统计学意义(P>0.05)。结论MRI联合CTP诊断超急性期脑梗死的检出率更高,能发现更多病灶,值得临床重视。

Objective To explore the diagnostic value of MRI combined with CT perfusion imaging(CTP)in hyperacute cerebral infarction(HCI).Methods A retrospective analysis was performed on MRI and CTP data from 82 patients diagnosed with HCI by physicians in hospitals from imaging January center 2018 to September 2019.MRI and CTP images were analyze.The detection rate and detected number of lesions at each site by MRI,MRI combined with CTP were statistically analyzed.Results It could be seen by MRI that lesions showed obvious high signals on DWI in HCI patients.However,there was no apparent abnormal signal in T1WI,T2WI and FLAIR,and there was no slightly high signal in T2WI.CT scan mostly showed normal or partial sulus narrowing.CTP CBF images showed abnormally low perfusion areas,and MTT is prolonged.In 82 HCI patients,the detection rate and the number of detected lesions by MRI combined with CTP were 96.34%and 131,significantly higher than those by MRI(80.94%,93).The proportion of patients with multiple lesions detected by MRI combined with CTP was considerably higher than that by MRI(39.02%vs 18.29%)(P<0.05).However,there was no significa nt difference in the number of lesions at different parts of cerebral infarction between the two methods(P>0.05).Conclusion The detection rate of MRI combined with CTP is higher in diagnosis of HCI,which can find more lesions and is worthy of clinical attention.