Abstract：Objective: To study the normal MR venographic findings of the superficial middle cerebral veins(SMCV). Methods: MR findings including T1WI, T2WI, T2WI-flair, DWI and 3D-PC venography in 106 normal subjects were obtained. Results: ①The visualization rates for SMCV, Trolard’s vein and Labbe’s vein were 64.6%, 52.4% and 89.6% respectivily. ②The configuration of Labbe’s vein was showed a single trunk type in 144 cases, double trunk type in 38 cases and multiple trunk type in 10 cases. ③The bridging veins drained to the superior sagittal sinus were 3.651±0.964 on the right cerebrum, and 3.679±0.932 on the left cerebrum. ④The drainage dominance of superficial vein on the right cerebrum was Labbe’s vein>Trolard’s vein>SMCV, and on the left cerebrum Labbe’s vein>SMCV>Trolard’s vein. ⑤The drainage dominance for Labbe’s vein on the left cerebrum was more efficient than that on the right cerebrum(P<0.05), for Trolard’s vein on the right cerebrum was more efficient than that on the left cerebrum(P<0.05), and for SMCV the drainage dominace was equal on both sides(P>0.05). Conclusions: MR venography provides a useful method to demonstrate the anatomic features of SMCV, which may be significant for clinical diagnosis and treatment.
2007, Vol. 18 
