慢性硬膜下血肿性痴呆的CT表现及临床意义

目的：研究慢性硬膜下血肿的CT表现与临床意义。材料与方法：回顾分析总结30例慢性硬膜血肿性瘤痴呆，主要CT表现为颅骨内板下新月状阴影，血肿密度与其期龄有关，随时间推移分别表现为等密度，混合密度和低密度，慢性硬膜下血肿性痴呆好发部位多见于额颞顶部颅骨内板，其血肿体积常常大于一般外伤性硬膜下血肿，其临床表现主要为进行性精神障碍，结论：慢性硬膜下血肿性痴呆的早期症状易被临床医师忽视，CT检是早期发现慢性硬膜下血肿性痴呆有效且方便的方法。

CT Signs and Its Clinical Significance of Chronic Subdural Hematomas Dementia

Purpose:To study the CT signs and its clinical significance of Chronic subdural hematomas dementia.Materials and Methods:The CT signs of 30 cases with chronic subdural hematomas dementia were reviewed retrospectirely.Results:In 30 cases of chronic subdural hematomas dementia,the chief CT signs show as crescant sharp shadow under skull plate.The density of the hematoma was related to its age.In the early stage,it was of isodensity,then changed to mixed density and ultimately to hypodensity.It mostly occurred in the frontal,tempral and partietal parts.Its volume is usually larger than general traumatic chronic subdural hematomas.the chief clinical appearances of chronic subdural hematomas are progressive spiritual obstruction.Conclusion:In the early stage of chronic subdural hematomas,its clinical symptoms are easily ignored by doctors.CT examination is an efficient and convince way to find it early.