152例急性颅内损伤的CT分析

目的研究急性颅内损伤的CT表现及急性外伤性颅内血肿的变化。方法分析 15 2例急性颅内损伤的CT影像。结果本组颅内血肿 10 0例 ,外伤后 5 -72h内复查CT发现血肿明显增大者 2 5例 ,外伤 72h— 7dCT示血肿明显增大者 3例。脑挫裂伤 76例 (包括脑内血肿 30例 ) ,其中对冲伤 17例。CT显示蛛网膜下腔出血 6 1例 ,其中脑沟内高密度影 49例。本组合并颅骨骨折75例。结论外伤性颅内血肿于外伤后 7d内有逐渐增大可能 ,硬膜下血肿及脑挫裂伤部分为对冲伤所致。脑沟内高密度是蛛网膜下腔出血最常见的CT征象。大脑中线旁脑沟内高密度 ,是鉴别该处蛛网膜下腔出血与硬膜下血肿的重要CT征象。硬膜外血肿常合并相邻部位的颅骨骨折

CT analysis of acute intracranial trauma

ObjectiveTo study CT features of acute intracranial trauma and changes of hematoma in acute stage. MethodsCT findings of acute intracranial trauma of 152 cases were analyzed. ResultsIn 100 cases with intracranial hematoma, the hematoma enlarged obviously within 5-72 h after trauma in 25 cases; the hematoma enlarged markedly within 72 h-7d after trauma in 3 cases. In 76 cases of cerebral contusion, counter point trauma was found in 17 cases. In 61 cases of subarachnoid hemorrhage, high density in cerebral sulcus was shown in 49 cases. Skull fracture was found in 75 cases. Conclusions Intracranial hematoma may enlarge gradually within 7d after trauma. Cerebral contusion was partially due to counter point trauma. Hemorrhage in cerebral sulcus was demonstrated on CT as increased density in the cerebral sulcus, which is the most important sign of subarachnoid hemorrhage. Hemorrhage in interhemispheric fissure was demonstrated on CT as centipede-line increased density, which is an important sign for differentiating from subdural hematoma. Skull fracture was closely related with lntracranial trauma, which was complicated with adjacent extradural hematoma frequently.