| 脑磁图听觉诱发磁场等价电流偶极子强度在急性脑梗死的意义 |
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| 引用本文： | 孙占用,吕佩源,冯亚青,孙吉林,吴杰,李素敏. 脑磁图听觉诱发磁场等价电流偶极子强度在急性脑梗死的意义[J]. 临床误诊误治, 2005, 18(7): 457-458,F003 |
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| 作者姓名： | 孙占用 吕佩源 冯亚青 孙吉林 吴杰 李素敏 |
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| 作者单位： | 河北省人民医院,石家庄,050051;河北省人民医院,石家庄,050051;河北省人民医院,石家庄,050051;河北省人民医院,石家庄,050051;河北省人民医院,石家庄,050051;河北省人民医院,石家庄,050051 |
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| 摘 要： | 目的:研究急性脑梗死时脑磁图听觉诱发磁场(AEFs)的等价电流偶极子(ECD)强度变化的意义。方法:应用脑磁图机对15例急性脑梗死患者进行AEFs检测,AEFs波峰由ECD评估。结果:AEFs的最主要波峰为M100,其ECD位于两侧颞横回,患侧ECD强度减小(P<0.01)。结论:急性脑梗死可使患侧AEFs的ECD强度下降,为评估听觉皮层功能受损提供客观、灵敏的指标。
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| 关 键 词： | 脑梗死 脑磁图描记术 听觉诱发磁场 等价电流偶极子 |
| 文章编号： | 1002-3429(2005)07-0457-02 |
Significance of Magnetoencephalgraphical Auditory Evoked Magnetic Fields ECD Intensity in Acute Cerebral Infarction |
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| SUN Zhan-yong,LV Pei-yuan,FENG Ya-qing,et al. Significance of Magnetoencephalgraphical Auditory Evoked Magnetic Fields ECD Intensity in Acute Cerebral Infarction[J]. Clinical Misdiagnosis & Mistherapy, 2005, 18(7): 457-458,F003 |
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| Authors: | SUN Zhan-yong LV Pei-yuan FENG Ya-qing et al |
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| Abstract: | Objective:To investigate the significance of alterations in intensity of ECD of auditory evoked magnetic fields by magnetoencephalgraphy(MEG) in patients with acute cerebral infarction.Methods:Auditory evoked magnetic fields(AEFs) were recorded in 15 cases of acute cerebral infarction by magnetoencephalgraphy.The peak of AEFs was estimated by equivalent current dipole(ECD).Results:M100 was the most prominent components of AEFs.It raised from the area close to posterior Heschl's gyrus.The intensity of ECD was smaller in the affected hemisphere(P<0.01).Conclusions:The intensity of ECD in AEFs could be reduced in the affected hemisphere of acute cerebral infarction,serving as an objective and sensitive indexes for evaluating the function of auditory cortex in patients with acute cerebral infarction. |
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| Keywords: | Cerebral infarction Magnetoencephalography Auditory evoked magnetic fields Equivalent current dipole |
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