Diagnostic accuracy of susceptibility-weighted imaging (swi) to diagnose the cases of cerebral venous thrombosis (cvt) compared to magnetic resonance venography (mrv) - one year hospital based cross sectional study”

Abstract

Background: Cerebral venous thrombosis (CVT)/Cerebral Venous Sinus Thrombosis (CVST) is a rare presentation of venous thromboembolism. Clinical presentation is highly variable in CVT. The diagnosis of CVT could be missed on T1 and T2 Weighted sequences. Magnetic susceptibility signals produced by degraded products in the blood such as deoxyhaemoglobin can be visualised in Susceptibility Weighted Imaging (SWI) as hypointense signal which is termed as magnetic susceptibility effect (MSE). On MR Venogram - Time of flight (MRV- TOF) the intraluminal thrombosis is detected by absence of flow signal. Hence the present study was carried out to compare the diagnostic accuracy of SWI with MRV-TOF for CVT.