摘要
目的评价320排动态容积CT在脑静脉窦血栓形成(CVST)诊断中的应用价值。方法对12例CVST患者行320排头颅CT一站式检查,包括CT平扫、各期增强,然后将动态容积原始数据重建出容积图像,传入Vitreafx工作站,处理获得动脉期、动静脉混合期、静脉期及静脉窦期血管重建图像。结果 12例CVST中10例累及多个静脉窦,2例为单个静脉窦受累。CVST直接征象有:CT平扫显示为"高密度三角征"(3例),"带征"(1例),CT增强显示"空三角征"(4例);间接征象有:血栓形成部位邻近脑组织水肿(3例),静脉性脑梗死(4例),静脉性脑出血(5例)。12例CVST中静脉期图像均可见静脉窦不规则狭窄或闭塞,可见特征性的"空槽征"。12例患者的CVST均经3D-DSA证实。结论与传统影像学检测方法比较,320排动态容积CT检查无创伤、时间短和辐射剂量少,对CVST的诊断具有重要价值。
Objective To evaluate the value of 320-slice dynamic volume CT to the diagnosis of cerebral venous sinus thrombosis （CVST）. Methods Twelve patients with CVST were examined with 320-slice dynamic volume CT, including unenhanced and enhanced brain CT scanning, and CT angiography. Vascular images were reconstructed through the workstation. Three-dimensional digital subtraction angiography （3D-DSA） examination was performed also in all the patents. Results CVST was definitely diagnosed by 320-slice dynamic volume CT in 12 patients, of whom, 10 suffered from multiple venous sinuses thrombosis and 2 from the single venous sinus thrombosis. The direct signs of CVST included ＂ense triangle sign＂ in 3 cases, ＂cord sign＂ in 1 case shown by unenhaneed CT scanning and ＂empty triangle sign＂ in 5 cases shown by the enhanced axial CT scanning. Indirect signs of CVST included cerebral edema in 3 eases, cerebral infarction in 4 cases and cerebral hemorrhage in 5 cases. The irregular stenosis or occlusion of venous sinuses was found by CT-DSA in all the patients. The diagnostic ＂empty groove sign＂ was observed. CVST was confirmed by 3D-DSA in all the patients. Conclusion The images from 320-slice dynamic volume CT with wide area detector and non-helical scanning mode, which have excellent quality and less artifacts, have important value to the diagnosis of CVST.
出处
《中国临床神经外科杂志》
2012年第11期658-661,共4页
Chinese Journal of Clinical Neurosurgery
