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皮质磁刺激的中枢运动传导时间(central mo-tor conduction time CMCT)测定对患者无明显不适。该项检查广泛应用于疾病、尤其是对多发性硬化(MS)的研究。若患有MS 就可能会出现异常磁诱发运动电位(magnetically evoked motor potentialMEP),本文就其对MS 的诊断敏感性与特异性探讨。作者对68例患者(男30例,女38例,年龄18～63岁,平均40岁)予以临床检查,并设50名健康人作对照,脑及脑干的MRI 扫描,CSF 及其IgG 测定,VEP、BAEP、SSEP 和MEP 检查。其结果分别对照分析。MEPs 采用Dantec 磁刺激器,最高输出直流电压1.5RV,电流10KA,电容量0.825mF。磁刺激使双侧皮质与神经根兴奋。从双侧肱二头肌(BB),桡侧腕屈肌(FCR),手第一背侧骨间肌(FDI),胫骨
Cortical magnetic stimulation of the central conduction time (central mo-tor conduction time CMCT) determination of no obvious discomfort to patients. This test is widely used in the treatment of diseases, especially for multiple sclerosis (MS). In patients with MS may appear abnormal magnetic induced motor potential (magnetically evoked motor potentialMEP), this paper on its diagnostic sensitivity and specificity of MS. The author of 68 patients (30 males and 38 females, aged 18 to 63 years, mean 40 years old) and 50 healthy controls, brain and brain stem MRI scan, CSF and IgG determination , VEP, BAEP, SSEP and MEP inspection. The results were controlled analysis. MEPs Dantec magnetic stimulator, the maximum output DC voltage 1.5RV, current 10KA, capacitance 0.825mF. Magnetic stimulation excites bilateral cortices and nerve roots. From the bilateral biceps (BB), radial wrist flexor (FCR), hand first dorsal interosseous (FDI), tibia