颅脑损伤患者CT与MRI的比较

A Comparative Study of Diagnostic Significance of MRI and CT in Evaluating Patients with Craniocerebral Traumas

目的:探讨MRI在颅脑损伤中的诊断作用。方法:对近2年诊断有争议的28例颅脑损伤患者CT和MRI检查结果行回顾性分析。首次CT扫描均在伤后6 h内进行,对CT诊断有争议的颅脑损伤患者行MRI检查。结果:硬膜下血肿、硬膜外血肿的诊断,CT与MRI结果相符;蛛网膜下腔出血、颅骨骨折的诊断,CT较敏感;脑叶挫裂伤、脑深部挫裂伤的诊断,MRI明显优于CT。结论:MRI能明显提高脑叶挫裂伤和脑深部挫裂伤诊断敏感性,减少漏诊和误诊。

Objective： The diagnostic value of MRI in patients with craniocerebral trauma has been reviewed. Methods： Twenty-eight cases in whom the diagnoses were controversial based on initial CT examination had been reexamined by MRI in the past two years. All the patients were initially evaluated by CT scan in 6 hours after head injury. Some cases who showed a controversy in diagnosis were subject to MRI. Results： In light of subdural hematoma and epidural hematoma, both MRI and CT had the similar diagnostic significance, but considering traumatic subarachnoid hemorrhage and skull fracture, CT was more sensitive than MRI. However, MRI was more reliable than CT in diagnosing cortical cerebral contusion and laceration, and deep cerebral contusion and laceration. Conclusion： MRI can increase diagnostic sensitivity in recognizing cortical cerebral contusion and laceration, and deep cerebral contusion and laceration.