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增强T_2WI-FLAIR对脑膜病变的诊断价值 被引量:7

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摘要 脑膜包括硬脑膜、软脑膜、蛛网膜。通常所说的柔脑膜病变包括软脑膜、蛛网膜和蛛网膜下腔的病变。多种病变可累及晌膜,各种脑膜炎性病变早期均为蛛网膜下腔和柔脑膜血管周围的炎性细胞浸润并血管扩张充血,或为蛛网膜下腔纤维组织增生,柔脑膜血管增生。脑膜转移瘤尤其是通过脑脊液播散者,瘤细胞弥漫散布于蛛网膜下腔中,在蛛网膜下腔沉积、生长,病变较轻的区域脑实质表层不受累,病变较重的区域常可见到脑实质表层被累及,同时血管周围间隙中常充满瘤细胞。脑脊液转移还易累及包绕神经的脑膜。
出处 《影像诊断与介入放射学》 2010年第5期316-319,共4页 Diagnostic Imaging & Interventional Radiology
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