快速自溶的急性硬膜下血肿的CT特征与吸收机理

目的 :总结快速自溶的急性硬膜下血肿 (acutesubduralhematoma ,ASDH)的CT特征 ,并对其溶解吸收机理及与CT表现的相互关系进行探讨。方法 :收集 15例急性期内完全或大部分溶解吸收的ASDH病例 ,男 8例 ,女 7例 ,均为外伤所致。全部用TOSHIBAXvision 32 0 0常规扫描 ,层厚层距均为 10mm ,对血肿层厚小于两个层面的采用 3mm薄层扫描。结果 :15个ASDH于急性期或亚急性期完全溶解吸收 ,出血量均 <15ml,12个与颅内板局部或全部有低密度间隙。结论 :ASDH的快速自溶吸收与脑脊液 (CSF)的灌注对血肿的稀释和回流吸收 ,以及肿胀实质对硬膜下腔的挤压有关

CT features of rapid resolution of acute subdural hematoma and its mechanism

Objective:To evaluate the CT features of the rapid resolution of acute subdural hematoma (ASDH) and investigate its mechanism.Methods:15 patients with rapid resolution of traumatic ASDH at acute stage were collected,including 8 males and 7 females.All the patients were scanned with TOSHIBA Xvision 3200 CT.The scanning parameters with a slice thickn ess of 10mm at 10mm intervals,and 3mm thickness for the small size of hematoma were used.Results:ASDH was dissolved during acute or subacute stage in 15 cases .The volume of hematoma was less than 15ml.A low density string was found between the endocranium and the hematoma in 12 cases.Conclusion:The mechanism of the rapid resolution of ASDH probably is related to the perfusion of the cerebral fluid(CSF) and the pressure of the swelling parenchyma to the hematoma.