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目的 提高第四脑室肿瘤CT定位及定性诊断的准确性。方法 分析 2 8例经手术病理证实为第四脑室肿瘤的增强前后CT表现 ,特别是各种不同肿瘤类型的CT表现及其特征 ,并对不同的CT扫描方法进行了比较和分析。结果 第四脑室肿瘤的CT表现有一定的特征性 ,依其形态、密度、增强前后表现和第四脑室形态的改变 ,其定位和定性诊断的准确率分别可达 68%和 71%。结论 第四脑室肿瘤在定位诊断的基础上 ,结合病人年龄及其CT的特征性表现 ,可对其来源作出判断。
Objective To improve the accuracy of CT localization and qualitative diagnosis in the fourth ventricle tumors. Methods The CT findings of 28 cases of fourth ventricle tumors confirmed by surgery and pathology were analyzed. The CT findings and characteristics of various tumor types were analyzed. The CT scanning methods were compared and analyzed. Results The CT findings of the fourth ventricle tumor have certain characteristics. According to their morphology, density, enhanced anteroposterior and fourth ventricle morphological changes, the accuracy of localization and qualitative diagnosis is up to 68% and 71% respectively. Conclusion The fourth ventricle tumor can be judged according to the diagnosis of its location and the age of the patient and the CT features.