16层螺旋CT全脑动脉成像技术初探  

An Initial Study of Panencephalo-Arteriography with 16-detector Row Helical CT

作　　者：曹代荣[1] 李银官[1] 游瑞雄[1] 林钊[1] 江飞[1] 郑义浩[1] 王弘岩[1] 

机构地区：[1]福建医科大学附属第一医院影像科,福州350005

出　　处：《中国医学影像学杂志》2008年第3期214-217,共4页Chinese Journal of Medical Imaging

摘　　要：目的：评价16层螺旋CT全脑动脉成像的可行性。材料和方法：94例均用Toshiba 16层Aquilion螺旋CT扫描机扫描。注射造影剂后于18—19s行动脉期扫描，造影剂总量80～90ml，注射速度3．5ml／s或4ml／s。多种重建方法显示脑动脉。结果：94例中，47例（50．0％）达到全脑纯动脉期的显示；27例（28．7％）于扫描起始部未见静脉显影，但于颅中部即可见显影的静脉和回流的静脉窦显示（即半脑动脉期）；11例（11．7％）于扫描起始位置即已出现颈内静脉显示；6例（6．4％）虽可见脑动脉显示但密度太淡，难以重建成有效的三维脑动脉影像；3例（3．2％）完全未见血管增强。结论：16层螺旋CT扫描可以在部分病例中完成全脑纯动脉期成像，其成功率为50．0％。Purpose：To evaluate the feasibility of the panencephalo-arteriography with 16-detector row helical computed tomography. Materials and Methods： This study was performed with a Toshiba Aquilion 16-detector row helical CT scanner. All 94 cases were scanned at the time of 18 - 19 seconds for the arterial phase after the starting of injection contrast media. At the enhanced scan, all patients received 80 - 90mL contrast medium with a power injector at a rate of 3.5 or 4.0mL/sec. The whole cerebral arteries were demonstrated with maximum intensity projection（MIP）, muhiplanner reconstruction（MPR）, volume-render（VR） postprocessing techniques. Results： OF 94 cases, the panencephalic arteries were displayed without any vein in 47 cases; with veins and venous sinuses in 27 cases, which was called a half cerebral arterial phase; with internal jugular vein at the beginning of scan in 11 cases; with too light arterial opacification to reconstruct effective 3D cerebral arterial image in 6 cases; without any vessel opacification in 3 cases. Conclusion： 16-detector row helical computed tomography can complete a panencephalo-arteriography in some cases, its successful rate is about 50 percent（ % ） in this study.

关 键 词：16层螺旋CT 全脑动脉成像 

分 类 号：R816.1[医药卫生—放射医学]