CT诊断硬膜下血肿的临床价值

The Clinical Value of CT in Diagnosis of Subdural Hematoma

目的：探讨CT诊断硬膜下血肿的临床价值。方法：对50例硬膜下血肿患者采用美国GE全身CT扫描机，距阵256x256，层厚1.0 cm，扫描时间4.8秒。50例中18例同时行增强扫描，造影剂为60%泛影葡胺，按每公斤体重1-2 ml静脉加压快速注射后立即扫描，层次同增强前。结果：50例患者经平扫后，48例诊断为硬膜下血肿，2例经增强扫描和随访后明确诊断，平扫诊断符合率96%。53个血肿形态各异，急性和亚急性血肿19个，血肿均呈新月形，慢性硬膜下血肿34个，8个呈新月形，14个呈半月形，12个呈双凸形；急性血肿11个均为高密度；8个亚急性血肿5个为高密度，3个为混合密度；34个慢性血肿9个为混合密度，21个为等密度，4个为低密度。急性硬膜下血肿以高密度为主，亚急性和慢性硬膜下血肿高密度比率降低，等密度或混合型密度比率增加。结论：CT扫描可提高硬膜下血肿的临床诊断率，为临床治疗提供依据。

Objective：To investigate the clinical value of CT in diagnosis of subdural hematoma.Method：50 cases of subdural hematoma used the U.S. GE whole body CT Scanner,matrix was 256x256,thickness was 1.0 cm,scan time was 4.8 seconds.50 cases in 18 cases was took simultaneously enhanced scan, 60%contrast agent Diatrizoate,per kilogram of body weight immediately after scanning 1-2 ml intravenous bolus injected pressure,level was with enhanced front. Result：In 50 patients after the scan,48 cases diagnosed with subdural hematoma,2 cases diagnosed after enhanced scan and follow-up,scan diagnosis rate was 96%. hematoma shapes were 53,acute and subacute hematoma was 19,showed a crescent-shaped hematoma,Chronic subdural hematoma was 34,8 crescent-shaped,14 showed a half-moon,12 double-convex.11 acute hematoma hematoma density were high density,5 for high-density in 8 subacute hematoma,mixed-density 3.34 chronic hematoma 9 mixed density,21 of equal density,low density 4.Acute subdural hematoma with high-density-based,subacute and chronic subdural hematoma lower high-density ratios,such as density or mixed-density ratio increases.Conclusion：CT scans can increase the rate of clinical diagnosis of subdural hematoma,provide the basis for clinical treatment.