The value analysis of MRI combined with MRV diagnosis in 17 cases with cerebral venous sinus thrombosis

Objective To analyze MRI and MRV imaging of cerebral venous sinus thrombosis (CVST) formation,to provide a reference for the clinical diagnosis and treatment.Methods Seventeen cases of CVST patients confirmed by digital subtraction angiography (DSA),all underwent MRI plain scan,which MRI plain scan CT enhancement scanning 8 cases,MRV check 9 cases,DSAS check 5 cases.Results Seventeen cases of patients with CVST,one case of simple sigmoid sinus involvement,one case of simple straight sinus involvement,two cases of purely transverse sinus involvement,four cases of simple sagittal sinus involvement,four cases of superior sagittal sinus and transverse sinus were simulta-neously involved,five cases of sigmoid sinus and superior sagittal sinus involvement MRI.plain scanshow the effect of cerebral venous sinus flow void disappeared,including 2 cases of CVST patients showedT1WI signal,T2WI low signal; 12 cases of patients with CVST showed T1WI and T2WI high signal; uneven three cases of CVST patients with low intensity on T1WI and T2WI high signal.eight cases underwent MRI scan CT enhancement scanning,showed abnormal enhancement of cerebral venous,showed venous sinus strengthening of the different shapes,sinus thrombosis without strengthening,showed defect or empty like.The DSA and MRV checking showed the affected sinus,developing irregular,narrow shadow or not developing.Conclusions MRI combined with MRV not only can improve diagnosis rate of CVST by direct signs and indirect signs,but also reflects the pathological evolution and efficacy value,is the ideal means of early diagnosis of CVST and dynamic observation treatment efficacy. Key words: Cerebral venous sinus thrombosis; Magnetic resonance imaging;  Magnetic resonance venography;  Digital subtraction angiography