Wang P Y, Shen W C, Jan J S
Department of Internal Medicine, Taichung Veterans General Hospital, Taiwan, R.O.C.
Zhonghua Yi Xue Za Zhi (Taipei). 1995 Sep;56(3):179-85.
To correlate the findings of median nerves somatosensory evoked potentials (SEPs) with clinical manifestations and magnetic resonance (MR) findings in cervical radiation myelopathy after therapeutic irradiation for nasopharyngeal carcinoma.
Median nerve somatosensory evoked potentials (SEPs) were recorded in 10 patients with cervical radiation myelopathy. Seven patients were studied by SEP once, two patients received SEP twice, and one patient, three times.
On the basis of the median nerve SEP findings, three groups were identified: Group I, normal SEP responses (N9, N13 and N20); Group II, normal N13 with abnormal N20; Group III, Normal or abnormal N9 with both abnormal N13 and N20.
The size, eccentricity and extension to the dorsal columns of the lesions correlated well with SEP findings. When the lesions were confined mainly to the lateral column without much involvement of the dorsal columns, SEP findings were normal; with more extensive lesions involving the dorsal columns, SEPs became abnormal.
探讨鼻咽癌治疗性放疗后颈段放射性脊髓病患者正中神经体感诱发电位（SEP）结果与临床表现及磁共振（MR）表现之间的相关性。
对10例颈段放射性脊髓病患者进行正中神经体感诱发电位（SEP）检测。7例患者接受1次SEP检测，2例患者接受2次SEP检测，1例患者接受3次SEP检测。
根据正中神经SEP检测结果，将患者分为三组：I组，SEP反应正常（N9、N13和N20）；II组，N13正常但N20异常；III组，N9正常或异常，N13和N20均异常。
病变的大小、偏心度及向背侧柱的延伸与SEP检测结果密切相关。当病变主要局限于外侧柱而背侧柱受累较少时，SEP检测结果正常；当病变累及背侧柱范围更广时，SEP检测结果异常。
