3.0T MR Susceptibility Weighted Imaging in Diagnosis of Cerebral Developmental Venous Anomaly / 实用放射学杂志

ABSTRACT

Objective To assess the value of MR susceptibility weighted imaging(SWI) in the diagnosis of cerebral developmental venous anomaly(DVA). Methods Twenty-four patients with DVA were examined with 3.0T MR scanner, the sequences included spin echo T_1 WI, the turbo spin echo T_2 WI and SWI. The MR imaging features of DVA on SWI and conventional MR imaging were compared. Results Of the 24 cases with DVA, the lesions located in the white matter of frontal lobe(11 lesions), white mater of pa-rietal lobes (6 lesions), temporal lobes (2 lesions) and cerebellar hemispheres (5 lesions) respectively. Only 11 lesions were detected by pre-contrast MRI, which demonstrated as linear flow void in 4 cases and as radiated high signal intensity on T_2 WI in 7 cases. On contrast-enhanced MR imaging, all the lesions showed typical "caput medusae"-like enhancement. On SWI, all the lesions showed typical "caput medusae"-like low signal intensity. Conclusion SWI is sensitive to small venous anomaly and it can be a substitutive modality for contrast-enhanced MR imaging in the diagnosis and follow-up of DVA.