电子计算机体层摄影(CT)的出现,大大地改变了颅脑X线诊断的面貌。它是通过电子计算机测算检测器所得透过人体组织衰减后的X线量,因此比传统的X线诊断方法敏感得多。它能够区别一般X线诊断方法不能区别的组织和结构,因此,不需用任何造影剂,它可以显示脑室、脑池和脑沟。如果通过外用静脉注入60％泛影葡胺1～1.5毫升/ The appearance of computed tomography (CT) has greatly changed the appearance of cranial X-ray diagnosis. It measures the amount of X-rays that have been attenuated through human tissue by a computer and is therefore much more sensitive than conventional X-ray diagnostic methods. It can distinguish the tissues and structures that can not be distinguished by the general X-ray diagnosis method. Therefore, it does not need any contrast agent. It can show the ventricles, brain pool and sulcus. If infusion of 60% diatrizoate 1 to 1.5 ml via external vein