慢性硬膜下血肿的电子计算机X线断层扫描

我们用电子计算机X线断层扫描(CT)观察了43例慢性硬膜下血肿,分析了下列CT征象的诊断价值:(1)血肿密度;(2)脑室变形;(3)脑沟消失;(4)灰、白质交界内移;(5)透明隔移位;(6)皮质静脉内移;(7)血肿膜形成。重点讨论了慢性等密度硬膜下血肿的诊断问题。灰、白质交界内移不仅证实脑外血肿,而且可准确估计血肿的部位和大小,而无需血管造影等其它诊断手段。

COMPUTED TOMOGRAPHY IN CHRONIC SUBDURAL HEMATOMA

Forty-three cases of chronic subdural hemotomas were studied by CT,of which 35.29% were isodense collections. The diagnositic value of thefollowing CT signs are analyzed, (1) attenuation of the hematoma compared to adjacent brain tissue, (2) ventricular deformity, (3) disappearance of the cortical sulci, (4) gray-white matter interface (G-WMI) displacement,(5) displacement of the septum pellucidum, (6) displacement of the cortical veins, (7) formation of membrance of the hematoma. The diagnosis of chronic isodense subdural hematoma is emphatically discussed. The authors believe that medial displacement of G-WMI not only confirms the presence of an extracerebral collection, but also gives an accurate prediction of its size and location. Other diagnostic procedures such as angiography are not necessary in these cases.