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| 急性脑梗死脑磁图体感诱发磁场发生源ECD强度研究 | |
| 引用本文： | 孙占用,吕佩源,冯亚青,赵大为,王建华,田瑞振,郭振华,孙吉林. 急性脑梗死脑磁图体感诱发磁场发生源ECD强度研究[J]. 脑与神经疾病杂志, 2005, 13(2): 95-96,106 |
| 作者姓名： | 孙占用 吕佩源 冯亚青 赵大为 王建华 田瑞振 郭振华 孙吉林 |
| 作者单位： | 1. 050051,石家庄,河北省人民医院老年神经科 2. 050051,石家庄,河北省人民医院神经内科 3. 050051,石家庄,河北省人民医院脑磁图室 |
| 基金项目： | 河北省自然科学基金资助项目(301415) |
| 摘 要： | 目的:研究急性脑梗死患者脑磁图(magnetoencephalography,MEG)体感诱发磁场发生源等价电流偶极子(equivalentcurrentdipole,ECD)强度变化特征。方法:对15例急性脑梗死患者于发病后3～4周进行体感诱发磁场(SEFS)检测;同时检测16例健康志愿者作为对照。电刺激部位为腕部正中神经处,电流脉冲宽度0.3ms,刺激间隔0.5s。SEFS波峰由ECD评估。结果:所有受检者SEFs的最基本波形为M20,急性脑梗死患者患侧ECD强度减小(P<0.01)。结论:MEG可灵敏地检测出急性脑梗死患者体感皮层中枢功能损伤。 |
| 关 键 词： | 急性脑梗死 脑磁图 体感诱发磁场 等价电流偶极子 |
| 文章编号： | 1006-351X(2005)02-0095-03 |
The study of ECD strength of somatosensory evoked magnetic fields in patients with acute cerebral infarction by magnetoencephaigraphy |
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| SUN Zhan-yong,LU Pei-yuan,FENG Ya-Qin,ZHAO Da-wei,WANG Jian-hua,TIAN Rui-zhen,GUO Zhen-hua,SUN Ji-lin. The study of ECD strength of somatosensory evoked magnetic fields in patients with acute cerebral infarction by magnetoencephaigraphy[J]. Journal of Brain and Nervous Diseases, 2005, 13(2): 95-96,106 | |
| Authors: | SUN Zhan-yong LU Pei-yuan FENG Ya-Qin ZHAO Da-wei WANG Jian-hua TIAN Rui-zhen GUO Zhen-hua SUN Ji-lin |
| Affiliation: | SUN Zhan-yong,LU Pei-yuan,Feng Ya-qin,ZHAO Da-wei,WANG Jian-hua,TIAN Rui-zhen,GUO Zhen-hua,SUN Ji-lin. Department of Geriatric Neurology,Hebei Provincial People's Hospital Shijiazhuang 050051. China |
| Abstract: | Objective: To investigate the ECD strength of somatosensory evoked magnetic fields (SEFs) in patients with acute cerebral infarction by magnetoencephalgraphy (MEG). Methods: SEFs were recorded from 15 patients with acute cerebral infarction and 16 health volunteers with 306-channel whole-head MEG. Electric stimuli were presented with interstimulus intervals of 0. 5s. The peaks of SEFs were estimated by equivalent current dipole(ECD). Results: M20 was the most elemental components of SEFs. the strength of ECD of M2O was smaller in affected hemisphere in patients with acute cerebral infarction (P<.01). Conclusion: Latent cortical impairment can be examined by MEG with higher spatial and temporal resolution. |
| Keywords: | Acute cerebral infarction Magnetoencephalography (MEG) Somatosensory evoked magnetic fields ( SEFs ) Equivalent current dipole ( ECD ) |
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