颅内胶质瘤术后不同时期的MRI表现对肿瘤切除程度的评价

MRI Evaluation of Removed Degree of Intracranial Glioma in Different Periods after Surgery

目的 探讨颅内胶质瘤术后不同时期的MRI增强特点 ,客观地评价脑胶质瘤切除程度。材料与方法 分研究组和对照组 ,研究组为 13例脑胶质瘤 ,对照组包括 15例脑膜瘤和 13例脑内血肿。于手术后早期 ( 3天内 )、中期 ( 10天左右 )、后期 ( 1～ 2个月 )行MRI平扫及增强扫描。分析产生非肿瘤组织强化的原因 ,找出检查的最佳时期。结果 术后 3天内的早期MRI检查 (EPM RI)能正确反映颅内手术情况 ,而中期及后期的检查中有许多干扰因素 ,可出现非肿瘤组织强化 ,影响正确的判断。结论 术后 3天内MRI检查可作为评价胶质瘤切除程度的确切手段。

Objective To assess the removed degree of intracranial glioma by analyzing postoperative MRI features.Materials and Methods Both plain and contrast enhanced MRI scanning was performed postoperatively in 13 patients with glioma (study group) as well as in 15 patients with meningioma and 13 patients with brain hemorrhage (control group) at early (within 3 days), intermediate (around the 10th day) and later stage (in 1～2 months) respectively. The factors causing enhancement of non tumorous tissue were analyzed, and the optimal time for estimating the removed degree of the tumor was deduced.Results MRI within 3 days after surgery could well reflect the intracranial surgical situation, while at inter mediate or later stage many interfering factors, such as non tumorous tissue enhancement, could produce great influence on judgment.Conclusion MRI within 3 days after surgery is a reliable method to assess the removed extent of glioma.