首页> 中文期刊>实用放射学杂志 >快速吸收的急性硬膜下蛛网膜下腔混合出血的CT特征

快速吸收的急性硬膜下蛛网膜下腔混合出血的CT特征

     

摘要

Objective To investigate the CT characteristics of rapid spontaneous resolution of acute subdural- subarachnoid mixed hemorrhage.Methods Seventeen cases with traumatic non- typical acute subdural hematoma and subarachnoid hemorrhage were examined by CT repeatedly in short-term.The results were analyzed retrospectively.Results The lesions in 17 cases were all appeared as mimicking acute subdural hematomas with mixed crescent-shaped high-density.The hemorrhages had the following characteristics: ① Monitored by the dynamic CT, the hemorrhages dissolved quickly during 1-7 days.②The hemorrhages showed mixed- density with irregular or band low-density areas.③Cisternals and sulcuses around the hemorrhages were all with high density.④ The hemorrhages were located mostly in frontotemporal eara.⑤ Some hemorrhages could moving along the subarachnoid space (hametoma redistribution).Conclusion Rapid spontaneous resolution of actue subdural-subarachnoid mixed hemorrhages have certain CT characteristics.As the subdural space and subarachnoid communication,the absorption of hemorrhage is accelerated,so we believe that this kind of hemorrhage would be attributed to subarachnoid hemorrhage.Accurate diagnosis and close observation can avoid the patients suffer from surgery.%目的 探讨快速自行吸收的急性硬膜下蛛网膜下腔混合出血的CT特征.方法 对17例常规CT表现为不典型急性硬膜下血肿及蛛网膜下腔出血的颅脑损伤病人进行了短时间CT复查,并对其结果进行回顾性分析.结果 17例均表现为类似急性硬膜下血肿的新月形混杂高密度影.病灶特点:①病灶吸收很快,在动态CT监测下,病灶多在短时间(1~7 d)内吸收.②病灶密度混杂,可见不规则形或带状低密度区.③病灶临近脑池脑沟密度升高.④病灶多位于额颞部.⑤部分病灶可沿蛛网膜下腔"游动"(血肿重分布).结论 快速自行吸收的急性硬膜下蛛网膜下腔混合出血具有一定的CT特征,由于硬膜下腔及蛛网膜下腔沟通,加速了出血的吸收,应归属于蛛网膜下腔出血,准确诊断及严密观察可避免患者的手术之苦.

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