评价磁共振弥散加权成像在急性缺血性脑梗死的诊断效能
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Toevaluate the diagnostic efficacyof diffusion-weighted magneticresonance imagingin acute ischemic cerebral infarctionLi Yu Cheng Guoyi.Imaging Department， Xinzheng Tianyou Hospitalof Traditional Chinese Medicine， Zhengzhou 451150，China
【Abstract】ObjectiveTo analyze the diagnostic eficacyof diffusion-weighted magnetic resonance imaging （DWI） inacute ischemiccerebral infarction.MethodsAtotalof97patientswith suspectedacute ischemiccerebral infarction who were treated inour hospital from January2O19to December 2O23were providedwith the CT examination andDWIscan.Thediagnostic efcacyofCTand DWIwascomparedand analyzed withtheresultsof cerebrovascularangiographyasthegoldstandard forthediagnosisofacute ischemiccerebral infarction.Theapparent brain tissue difusion coefficient （ADC）with acute ischemiccerebral infarction was compared with different clinical stages，beforeand after thrombolytic therapy，and with diferent prognoses.ResultsThediagnosticsensitivity and accuracy of DWI in acute ischemic cerebral infarction were higher than those of CT（ P <0.05）. The differences in diagnostic specificity，positive predictive value，and negative predictivevalue between the two diagnostic methods were not significant P>0.05 . The two groups were compared，ADC values of patients with hyperacute and acute cerebral infarction were higherthanthoseon theafected side，and ADCvalues of the healthy side were lower than those on the affected side in the subacute stage （ P <0.05）.The brain tissue of ADC value of the affected side of the patients in thehyperacutestage was the lowest，followed by the acute stage，and the ADC valuein the brain tissue of the patients in the subacute stage was the highest （ P <0.05）.The ADC value of acute ischemic cerebral infarction after thrombolytic therapy was higher than that before treatment （ P <0.05）. The ADC value of brain tissue in the good prognosis group was higher than that of the poor prognosis group，andthe ADC value of brain tissue in diferent prognosis patients had statistical differences （P<0.05） .ConclusionDWI has high diagnostic efficacy in acute ischemiccerebral infarctionand can judge theclinical stage，and theeficacyof thrombolytic therapyandalso can be helpful to make prognosis，which is worthy of application.
【Key words】 Acuteischemic cerebral infarction；Difusion - weighted imaging;Diagnostic effectiveness;
急性缺血性脑梗死发病机制为局限性脑组织坏死，脑部突发性血液循环障碍影响脑组织正常供血，继而使得脑组织出现缺氧，可引发残疾或者死亡等严重不良结局[1，2]。（剩余6239字）
