脑室内肿瘤的CT诊断价值

Computed Tomography Value in Diagnosis of Intraventricular Tumors

目的评价和探讨脑室内肿瘤的ＣＴ诊断价值。材料与方法收集２５例经ＣＴ诊断并手术病理证实的脑室内肿瘤资料，应用岛津ＳＣＴ—４５００ＴＥ全身ＣＴ机对病变进行薄层、重复和增强扫描，部分图像进行冠矢状面重建。对手术前后的定位和定性诊断进行比较。结果术前定位诊断准确率８８％，定性诊断准确率４８％。结论脑室内肿瘤临床表现不典型，不易早期发现，ＣＴ有较高的定位诊断率，定性诊断可达到５０％。脑室内外肿瘤的鉴别对指导临床手术及预后有重要意义。

Purpose To evaluate and study CT diagnostic value of intraventricular tumors. Materials and methods To select 25 patients diagnosed intraventricular tumors and confirmed by operations and pathologic examinations. The pathologic sites were scanned by CT in different ways: thin layer,repetition and enhancement. Some image were rebuilt coronally and sagittally. Compare the level diagnosis and the qualitative diagnosis before and after the operation. Results The accurate rate of the level diagnosis before the operation is 88%,and that of the qualitative diagnosis is 48%. Conclusion The clinic signs of intraventricular tumors is not typical,so it's hard to diagnose the disease early. While the accurate rate of the level diagnosis by CT is high and that of the qualitative diagnosis is could reach 50%. The differential diagnosis of the internal and external ventricular tumors is very significant to the guidline of the clinical operations and the prognosis of the disease.