中樞神經(jīng)系統(tǒng)影像診斷cns-資料下載頁
2025-01-04 04:16本頁面
【正文】 a solium parasitize in brain. Cerebral larval infestation is characterized by a fluidfilled cyst with a mural softtissue disease can been classified as larval living stage, larval death stage, calcification stage. Multiple spotlike highdensity with similar size in brain. CT: MRI: Acpanied by edema, the multiple cysts with long T1 and T2 signal are no more than 1 cm in diameter, larval living stage: The lowdensity cysts occur in groups with spotlike mural nodule . Calcification stage: 二 . Normal manifestation Examination of spinal cord 一、 Examination method MRI CTMyelographyXray spinal canal: 11mm long,16mm wide, Spinal cord: columniform,smooth margin,homogeneous 三、 Intramedullary tumor are predominantly ependymoma and astrocytoma.(about 90% of all intraspinal tumors) The outline of MRI diagnosis 1. the spinal cord is enlarged and the lesion is extensive 2. The subarachnoid space around the spinal cord is narrowed or blocked syringohydromyelia 4. The tumors are slightly hypointense on T1 and slightly hyperintense on T2. Enhancement can been seen. Extramedullary intradural tumor which is posed principally of meningiomas and nerve sheath tumors The outline of MRI diagnosis cord displacement to the contralateral side 2. The subarachnoid space on the side of the tumor is dilated 3. The tumor is localization with clear margin 4. The tumor is isointensity on both T1 and T2 with obvious enhancement. 五、 Extramedullary extradural tumor Malignant lymphoma and metastasis is usually observed The outline of MRI diagnosis 4. slight hypointensity on T1 and slight hyperintensity on T2,enhancement can been seen. cord displacement to the contralateral side and narrow subarachnoid space on the side of the tumor 2. Dura is shown as hypointensity between the tumor and spinal cord. 1. The tumors are flat and extend to a large area. 六、 Spinal cord injury The outline of MRI diagnosis cord edema: hypointensity on T1 and hyperintensitu on T2 cord hemorrhage:The signals evolvement were the same with intracerebral hematoma. cord transection injury: the spinal cord signals are interrupted. cord intenerate: hypointensity on T1 and hyperintensitu on T2 The vertebral column and spinal cord injury The injury consists of fracture of vertebral body and appurtenance,spinal cord concussion ,spinal cord contusion spinal cord pression, spinal cord transverse injury and hematoma ， nerve roots avulsion ,spinal cord intenerate and so on. MRI is the first of choice. 謝謝
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