摘要
目的:探讨CT及MRI对脑静脉血栓(CVT)形成的诊断价值并对比研究。方法:回顾性分析18例经脑血管造影(DSA)证实的脑静脉血栓患者的CT、MRI的临床资料及影像学表现,对比研究其差异性。结果:18例患者中,CT及CT增强检出6例阳性病例,其中上矢状窦4例,横窦1例,乙状窦1例,总检出率33.3%。MRI及MR静脉成像(MRV)联合使用检出16例,分别为上矢状窦7例,横窦3例,乙状窦1例,横窦并乙状窦3例,直窦1例,海绵窦1例,总检出率88.9%。当血栓位于上矢状窦、横窦及乙状窦,CT检出率分别为57.1%、33.3%、50.0%,而MR检出率分别为100%、100%、50.0%。结论:CT检查假阴性率高,敏感性及特异性低。MRI平扫结合MRV检查对脑静脉血栓诊断有较高的灵敏度及特异性,且2D-TOF MRV能清楚显示脑静脉血栓的空间构象,对指导临床手术有所帮助。
Objective To investigate and compare the diagnostic value of CT and MR in patients with cerebral venous thrombosis. Methods The CT and MRI findings and clinical symptoms of 18 patients with cerebral venous thrombosis confirmed by DSA were retrospectively and comparatively analyzed. Results In all 18 patients,6 cases were positively manifested in CT or enhanced CT,the detective rate was 33. 3%,in which thrombi were located at superior sagittal sinus in 4 cases,transverse sinus in 1 case,sigmoid sinus in 1 case,respectively. Meanwhile,12 cases were positively manifested in MRI or MRI combined MRV,the detective rate was 88. 9%,in which thrombi were located at superior sagittal sinus in 7 cases,transverse sinus in 3 case,sigmoid sinus in 1 case,transverse sinus combined sigmoid sinus in 3 cases,sinus rectus in 1 case,cavernous sinus in 1 case,respectively. When thrombus locating at superior sagittal sinus,transverse sinus,sigmoid sinus,the detective rates of CT were 57. 1%,33. 3%,50. 0%,but the detective rates of MR were 100%,100%,50. 0%,respectively. Conclusion Compared with CT,MRI combined MRV has higher sensitivity and specificity in diagnosis of cerebral venous thrombosis,and 2D-TOF MRV can show the space structure of cerebral venous thrombus clearly which may be helpful for guiding operation.
出处
《湖北医药学院学报》
CAS
2013年第6期480-484,共5页
Journal of Hubei University of Medicine
关键词
脑静脉血栓
CT
磁共振成像
磁共振静脉成像
Cerebral venous thrombosis
CT
Magnetic resonance imaging
Magnetic resonance venography
