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2010•Chinese Journal of CT and MRIRequires access

The Value of MRI in Diagnosis of Cerebral Venous Malformation

JI Zhi-ya

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Abstract

Objective To investigate the value of MRI in diagnosis of cerebral venous malformation(CVM).Methods MR imaging data in 12 cases with CVM were restrospectively analyzed,conventional MRI,susceptibility weighted imaging(SWI) and enhanced MR were performed in all.Results 5 Cases were located in frontal lobe,3 cases in parietal lobe and 4 cases in cerebellum,On MRI drain veins were demonstrated as hypointensity on T1WI and hyperintensity on T2WI in 7 cases,hypointensity onT1WI and T2WI in 5 cases,while medullary veins were shown as hypointensity on T1WI and hyperintensity on T2WI.After enhancement,numerous radiating medullary veins were gathered together into the larger drain veins,as the characteristic CaputMedusas imaging appearance.Both the medullary and the draining veins appeared hypointensity clearly on SWI.Conclusion MRI could diagnose the CVM accurately,SWI shows more medullary veins than MRI and enhanced MRI,should be used in diagnosis of CVM as a routine MR sequenee.

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Objective To investigate the value of MRI in diagnosis of cerebral venous malformation(CVM).Methods MR imaging data in 12 cases with CVM were restrospectively analyzed,conventional MRI,susceptibility weighted imaging(SWI) and enhanced MR were performed in all.Results 5 Cases were located in frontal lobe,3 cases in parietal lobe and 4 cases in cerebellum,On MRI drain veins were demonstrated as hypointensity on T1WI and hyperintensity on T2WI in 7 cases,hypointensity onT1WI and T2WI in 5 cases,while medullary veins were shown as hypointensity on T1WI and hyperintensity on T2WI.After enhancement,numerous radiating medullary veins were gathered together into the larger drain veins,as the characteristic CaputMedusas imaging appearance.Both the medullary and the draining veins appeared hypointensity clearly on SWI.Conclusion MRI could diagnose the CVM accurately,SWI shows more medullary veins than MRI and enhanced MRI,should be used in diagnosis of CVM as a routine MR sequenee.

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Available abstract

Objective To investigate the value of MRI in diagnosis of cerebral venous malformation(CVM).Methods MR imaging data in 12 cases with CVM were restrospectively analyzed,conventional MRI,susceptibility weighted imaging(SWI) and enhanced MR were performed in all.Results 5 Cases were located in frontal lobe,3 cases in parietal lobe and 4 cases in cerebellum,On MRI drain veins were demonstrated as hypointensity on T1WI and hyperintensity on T2WI in 7 cases,hypointensity onT1WI and T2WI in 5 cases,while medullary veins were shown as hypointensity on T1WI and hyperintensity on T2WI.After enhancement,numerous radiating medullary veins were gathered together into the larger drain veins,as the characteristic CaputMedusas imaging appearance.Both the medullary and the draining veins appeared hypointensity clearly on SWI.Conclusion MRI could diagnose the CVM accurately,SWI shows more medullary veins than MRI and enhanced MRI,should be used in diagnosis of CVM as a routine MR sequenee.

Key concepts: Medicine, Hyperintensity, Medullary cavity, Susceptibility weighted imaging, Radiology, Magnetic resonance imaging, Parietal lobe, Venous malformation

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