摘要
目的探讨胼胝体发育不全的CT诊断价值。方法采用常规CT颅脑平扫,由3位资深放射科医师对CT图像进行分析和判断,共检出的胼胝体发育不良13例,儿童7例,成年6例,病人的年龄为4天至48岁,平均年龄13.2岁。结果CT主要表现:半球间裂增宽,与第三脑室前部异常靠近或相连(100%);两侧脑室前角平直、分离,室间孔分离,侧脑室体部扩大、平行或体部脉络丛夹角缩小;第三脑室扩大、上移,枕角扩大(憩室样)。同时,合并脑裂畸形(1例)、蛛网膜囊肿(2例)、脂肪瘤(1例)、透明隔缺如(1例)、光滑脑(1例)、丘脑融合(1例)和空洞脑(1例)等中枢神经畸形(占62%)。结论严重胼胝体发育不全具有典型CT征象,诊断不难,但轻型胼胝体发育不全则可能漏诊。
Purpose To Study CT appearances of DCC and improve diagnosis for it. Methods 13 patients with ACC including 7 children and 6 adults were analyzed by 3 experienced doctors. Patiant＇s age was from 4 days to 48 years with the average 13.2 years.CT findings of 13 cases of DCC were retrospectively reviewed. All of them were only undergone the plain scaning. Results The CT transaxial images demonstrated： 1.abnormal enlargment of interhemispheric fissure with approaching to the anterior part of the third ventricle; 2. flattened straightness and separated frontal horns; 3.separated interventricular foramina; 4.nearly parallel body part of laterlal ventricles or decreased angle between the choroids plexus of the ventricles; 5. dilatation and elevation of the third ventricle; 6.enlarged occipital horns. Accompanying multifarious congenital anomalies of the central nervous system（62%） were schizencephaly with gray matter heterotopia（1 case）, arachnoid cyst（2 cases ）, lipoma（1 case）, lack of septum pellucidum（1 case ）, smoothing cerebral gyri（lcase）, porencephaly（1 case）, thalamic fusion （lcase）. Conclusion The majority of DCC can be diagnosised with CT, but it may be leaked out for the untypical DCC.
出处
《上海医学影像》
2006年第1期39-42,共4页
Shanghai Medical Imaging
