海绵窦海绵状血管瘤的MRI诊断及意义  

MRI diagnostic importance of cavernous hemangioma in cavernous sinus

作　　者：潘锋[1] 顾晓丽[2] 周林江[3] 张明广[4] 何剑[1] 

机构地区：[1]浙江省湖州市中心医院放射科,浙江湖州313000 [2]复旦大学附属华山医院静安分院放射科,上海200040 [3]复旦大学附属华山医院放射科,上海200040 [4]复旦大学附属华山医院神经外科,上海200040

出　　处：《医学影像学杂志》2012年第12期1989-1992,共4页Journal of Medical Imaging

摘　　要：目的分析经手术和病理证实的21例海绵窦海绵状血管瘤(CHCS)的MRI表现,探讨MRI对CHCS诊断价值。方法 21例均行MRI平扫、增强及扩散加权成像(DWI),5例行单体素1 H-MRS检查。结果典型CHCS多数体积较大,呈"横葫芦状"横跨蝶鞍内外。MRI-T1WI呈等或稍低信号,T2WI呈类似脑脊液高信号。增强扫描病变呈非常显著的均匀或不均匀强化。DWI呈等或稍低信号。1 H-MRS 5例均表现为NAA峰、Cr峰和Cho峰消失,4例出现Lip峰。结论 MRI平扫、增强扫描及DWI、1 H-MRS等检查方法可对CHCS准确定位并作出术前定性诊断,有助于手术方案的选择并确定手术入路,指导精确手术,降低致残率。Objective To analyze the MRI features of 21 cases of cavernous hemangioma in cavernous sinus （CHCS） confirmed by surgery and pathology and to discuss diagnostic value of MRI for the CHCS. Methods 21 cases underwent MRI scan, enhancement and MR diffusion-weighted imaging （DWI）, and 5 cases underwent single voxel 1H-MRS. Results Most of typical features of CHCS were large, and showed ＂cross-gourd-shaped＂ lesions across the inside and outside the sella. The CHCS lesions showed equal or slightly low signal on T~ WI, high signal similar to cerebrospinal fluid on T2 WI, significant homogeneous or heterogeneous enhancement on MR Enhancement scan, and equal or slightly low signal on DWI. 5 cases showed no NAA, Cr and Cho peak, and 4 cases showed Lip peak on 1 H-MRS. Conclusion MRI plain scan, MRI enhancement, DWI and 1 H-MRS were useful methods for accurately preoperative diagnosis for CHCS, and help de- termine the surgical approach, guide precise surgery and reduce disability.

关 键 词：海绵窦 海绵状血管瘤 磁共振成像 磁共振波谱 

分 类 号：R739.41[医药卫生—肿瘤] R445.2[医药卫生—临床医学]