脑结节硬化的影像学分析（附8例报告）

Imageology analysis of cerebral tuberous sclerosis

目的分析脑结节硬化的CT和MRt表现，探讨其临床应用价值。方法回顾性分析8例脑结节硬化患者的CT和MRI表现。其中男5例，女3例，年龄4个月～19岁。3例行CT平扫、MRI平扫及增强扫描，1例行CT平扫、MRt平扫，3例仅行MRI平扫，1例仅行CT平扫。结果5例CT平扫均表现为侧脑室室管膜下结节状钙化，2例伴有室管膜下等密度影，1例伴有右侧顶叶点状钙化，2例并发室管膜下巨细胞星形细胞瘤。7例MRI平扫均表现为窒管膜下短T．短T2信号影，伴有大脑皮层及白质区片状长T1短T2信号灶3例，稍长T，长T2信号灶1例，短T1短T2信号灶1例。2例并发室管膜下巨细胞星形细胞瘤，1例伴有小脑蚓部发育不良，2例伴有幕上脑室扩大，脑积水。结论脑结节硬化在CT、MRI上表现较具特征性，二者结合能有效提高该病的诊断率。

Objective To analyze the CT and MRI manifestation of cerebral tuberous sclerosis, and to evaluate their clinical application value. Methods The findings of CT and MRI of 8 patients with cerebral tuberous sclerosis were retrospectively anzlyzed. 5 patients were male, and 3 cases were female. The range of patients＇age was from 4 months to 19 years old. Three patients had taken precontrast of CT, MRI and contrast MRI studies. One patient taken pre - contrast of CT and MRI studies. Three patients only taken pre - contrast of MRI study,and one CT study. Results Pre - contrast of CT imaging of 5 cases all showed nodus calcification under ependyma of lateral ventricle. And 2 cases combined with isodense nodus, 1 case with punctuate calcification at the parietal lobe of right side, and 2 cases with subependymal giant cell astrocytoma. On pre - contrast of MRI film of 7 cases, the lesions under ependyma all showed short Tr and short T2 signal intensity,combined with 3 cases of lesions at pallium and white matter,which showed long TL and short T2 signal intensity, one case of slight long Tj long T2 signal intensity and one of short T1 and short T2 signal intensity. Two cases combined with subependymal giant cell astrocytoma, one with dysplasia of worm of cerebellum, and two with hydrencephalus. Conclusion Cerebral tuberous sclerosis has distinctive manifestation on CT and MRI studies,And the diagnostic rate of this disease will be increased effectively if combined using the two examine methods.