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| Preliminary study of 3D magnetic susceptibility weighted imaging in the diagnosis of cerebral venous malformation |
| QI Ming, ZHANG Ling |
| Department of Radiology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China |
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Abstract Objective: To evaluate the display ability of 3D susceptibility weighted imaging(SWI) on cerebral veins(sinuses). And to evaluate the value of 3D SWI in the diagnosis of cerebral venous malformation(CVM). Methods: Twenty healthy volunteers were examined by 3.0T MR, including T1WI, T2WI and 3D SWI. The vascular image quality of cerebral veins on T1WI, T2WI and SWI images were analyzed on several preset anatomical regions. The display of veins was classified into 4 grades(grade 0~grade 3). The difference among T1WI, T2WI and SWI in venous display quality was evaluated. Thirty patients of CVM were examined by 3.0T MR, including conventional MRI(T1WI, T2WI), 3D SWI and T1WI contrast-enhanced scan. The display of venous malformations was classified into 4 grades(grade 0~grade 3). The difference among conventional MRI, SWI and enhanced MRI in displaying CVM was evaluated. Results: In 20 healthy volunteers, SWI, T1WI and T2WI were almost the same in displaying the great cerebral venous system(straight sinus, superior sagittal sinus, inferior sagittal sinus, transverse sinus, sigmoid sinus, the great cerebral vein). The difference was not statistically significant(P>0.05). For the displaying of cerebral deep veins(internal cerebral vein, the basal vein) and small drainage veins(striate vein, the septum pellucidum vein, island vein), SWI was superior to T1WI and T2WI. The difference was statistically significant(P<0.05). In 30 cases of CVM, the display quality of conventional MRI, SWI and T1WI enhanced scan showed significant difference(P<0.05), and furthermore comparison between two of them showed that SWI and T1WI enhanced scan obtained consistent display effect. The difference between the two techniques showed no statistical significance(P>0.05). The two sequences were better than conventional MRI. The difference was statistically significant(P<0.05). SWI showed more details than T1WI enhanced scan. Conclusion: SWI is a more sensitive, feasible and effective method to show cerebral veins. It can be used as a routine sequence for cerebral venous system. SWI is highly sensitive to CVM and can be used as the preferred method for CVM instead of enhanced MRI.
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Received: 28 February 2014
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Corresponding Authors:
ZHANG Ling
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2014, Vol. 25 
