摘要
目的：探讨动态增强ＭＲＩ对颅内原发性肿瘤的诊断价值。材料与方法：使用１．０ＴＭＲＩ系统（ＭａｇｎｅｔｏｍＩｍｐａｃｔ，Ｓｉｅｍｅｎｓ）ＳＥ序列对７２例颅内原发性肿瘤进行动态增强扫描，分析各种肿瘤的对比增强率时间（ＣＥＲＴ）曲线类型、增强峰值（ＥＰ）及最大对比增强率（ＭＣＥＲ）。结果：ＥＰ在９０秒内见于３例血管瘤型脑膜瘤、１例血管母细胞瘤及１例脉络膜乳头状瘤；２６例星形细胞瘤仅４例Ⅲ、Ⅳ级的ＥＰ在１８０秒内，而２５例脑膜瘤中的１３例ＥＰ在１８０秒内，Ｐ值＜０．０１；血管瘤型脑膜瘤、神经鞘瘤、血管母细胞瘤及脉络膜乳头状瘤的ＥＰ及ＭＣＥＲ明显高于其他肿瘤。结论：动态增强ＭＲＩ的ＣＥＲＴ曲线类型、ＥＰ及ＭＣＥＲ有助于部分颅内原发性肿瘤的组织学诊断和富血管度评价。
Objective: To evaluate the dynamic enhanced MRI in diagnosing of primary intracranial tumors.Materials and Methods:Dynamic spin echo MRI was performed in 72 patients with primary intracranial tumors using a 1.0T MR unit (Magnetom Impact, Siemens). Contrast enhancement ratio time (CER T) curves, enhancement peak (EP) and maximum contrast enhancement ratio (MCER) of the tumor were analyzed.Results:EP appeared within 90 seconds was seen in angioblastic meningioma (n=3), hemangioblastoma (n=1) and choroid plexus papiloma (n=1). Thirteen out of 25 cases with meningioma showed EP within 180 seconds, while only 4 (grade 3 or 4) out of 26 cases with astrocytoma did within the same time (P<0.01). EP and MCER of the angioblastic meningioma, neurilemmoma, hemangioblastoma and choroid plexus papiloma was much higher than that of the other tumors.Conclusion: The CER T curves, EP and MCER with dynamic enhanced MRI are very helpful for the histologic diagnosis of some primary intracranial tumors and for the assessment of the vascularity of the tumor.
出处
《临床放射学杂志》
CSCD
北大核心
1999年第7期391-394,共4页
Journal of Clinical Radiology
