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用CT、MRI和SPECT检查了30例顽固性颞叶癫痫,共检出侧位异常21例,其中CT检出1例、MRI 7例、SPECT19例.三种方法检出侧位异常比较:CT发现颞叶小面积钙化,MRI未发现,MRI测得符合水肿,胶质增生或肿瘤、动静脉畸形或动脉瘤的信号6例,CT则全部漏掉;SPECT发现的19例异常,主要为颞叶或额叶(2例)血流低灌流区,2例癫痫发作后还发现颞部高灌流区,其中14例经CT和MRI检查却为正常或仅示解剖上的不对称;SPECT异常的定位,与CT和MRI一致.脑电图发现侧位异常17例,其中10例CT、MRI或SPECT发现了相应侧的异常.脑电图定位与SPECT低灌流区一致.作者认为,发现颞区钙化和结构的不对称,CT较有效,但对颞叶结构的微细病灶,MRI比CT
CT, MRI and SPECT 30 cases of intractable temporal lobe epilepsy were detected in 21 cases of lateral abnormalities, including CT in 1 case, 7 cases of MRI, 19 cases of SPECT.Analysis of lateral abnormalities by three methods: CT Found in the temporal lobe calcification, MRI was not found, MRI measured in line with edema, glial proliferation or tumor, arteriovenous malformations or aneurysm signal in 6 cases, CT was completely missed; SPECT found 19 cases of abnormalities, mainly for the temporal There were two cases of low perfusion area in the leaves or frontal lobes (2 cases), and two cases of temporal perfusion after epileptic seizures. Among them, 14 cases were normal or only showed anatomic anatomy by CT and MRI; Positioning, consistent with CT and MRI.Electrocardiogram found lateral abnormalities in 17 cases, of which 10 cases of CT, MRI or SPECT found the corresponding side of the abnormal.EEG mapping and SPECT low perfusion area consistent.The authors believe that the discovery of the temporal area Calcification and structural asymmetry, CT is more effective, but the temporal lobe structure of the lesion, MRI than CT