脑梗死与脑出血急性期应用DWI联合SWI诊断的价值

发布时间：2018-10-26 21:32

【摘要】：目的探讨脑梗死与脑出血急性期应用磁共振弥散加权成像(DWI)联合磁敏感加权成像(SWI)诊断的临床价值。方法选取2014年5月-2015年5月我院收治的60例急性脑梗死患者(A组)和24例急性脑出血患者(B组)为研究对象,所有患者均行1.5T磁共振DWI和SWI序列检查,观察两组患者的检查结果,并与12例正常自愿者(对照组)作比较。结果 A组急性期DWI信号较高,且随着时间的推移,信号增强越明显,病灶边界由模糊转为清晰,阳性率为100.0%,且SWI呈等信号;B组急性期DWI血肿中心信号为低信号,周围呈高信号,且随着时间的推移信号增强,SWI为均匀低信号。与对照组相比,A组ADC值降低,但降低幅度不大,且随着时间推移逐渐下降,B组ADC值明显降低,但随着时间的推移无明显改变,且B组ADC值下降幅度大于A组,P0.05;A组PV值正常,但出血性转化时,局部PV值降低,B组PV值明显降低,且B组PV值下降幅度大于A组,P0.05。结论脑梗死与脑出血急性期DWI和SWI检查的影像学表现不同,而DWI联合SWI应用于急性脑血管疾病的检查中,可提高诊断的准确率,有助于及时检测出脑梗死后出血性转化,对临床治疗具有重要价值。
[Abstract]:Objective to evaluate the clinical value of magnetic resonance diffusion weighted imaging (DWI) combined with magnetic sensitivity weighted imaging (SWI) in the diagnosis of cerebral infarction and acute cerebral hemorrhage. Methods from May 2014 to May 2015, 60 patients with acute cerebral infarction (group A) and 24 patients with acute cerebral hemorrhage (group B) were studied. All patients were examined with 1.5T DWI and SWI sequence. The results of two groups were observed and compared with 12 normal volunteers (control group). Results in group A, the DWI signal was higher in acute phase, and the enhancement of the signal was more obvious with the passage of time, the lesion boundary was changed from fuzzy to clear, the positive rate was 100.0and the SWI showed the same signal. In group B, the central signal of DWI hematoma was low in acute phase, and the signal intensity around it was high, and the signal intensity was enhanced with time, and the signal of SWI was homogeneous and low signal. Compared with the control group, the ADC value of group A was decreased, but the decrease was not significant, and the ADC value of group B was obviously decreased with the passage of time, and the ADC value of group B was lower than that of group A (P0.05). The PV value of group A was normal, but the value of local PV was decreased, the value of PV in group B was obviously decreased, and the decrease of PV value in group B was larger than that in group A (P0.05). Conclusion the imaging findings of DWI and SWI are different between cerebral infarction and acute cerebral hemorrhage. DWI combined with SWI can improve the diagnostic accuracy and help to detect hemorrhagic transformation after cerebral infarction. It has important value for clinical treatment.
【作者单位】：辽宁省抚顺市中心医院;
【分类号】：R445.2;R743.3

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