Comparative Study of CT and MR on Diagnosis of Cerebral Venous Thrombosis

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.